Answer:
-21
Step-by-step explanation:
7 x 3 =21
7 x -3= -21
hope this helps
Answer:
-21
Step-by-step explanation:
7 × (-3) = -21
A positive times a negative is always a negative.
1. When Steve woke up. His temperature was 102o F. Two hours later it
was 3o lower. What was his temperature then?
2. An elevator is on the twentieth floor. It goes down 11 floors and then up
5 floors. What floor is the elevator on now?
3. A deep-sea exploring ship is pulling up a diver at the rate of 25 feet per
minute. The diver is 200 feet below sea level. How deep was the diver
10 minutes ago?
4. If it is 5o outside and the temperature will drop 17o in the next six hours,
how cold will it get?
5. Josie has $47 left on her checking account. If she writes a check for $55,
what will Josie’s balance be?
6. Joe is playing a game with a regular die. If the number that turns up is
even, he will gain 5 times the number that comes up. If it is odd, he will
lose 10 times the number that comes up. He tosses a 3. Express the
results as an integer.
7. It will be – 12o tonight. The weatherman predicts it will be 25o warmer
by noon tomorrow. What will the temperature be by noon tomorrow?
8. The average temperature at the South Pole is – 45o F. The average
temperature on the Equator is 92o F. How much warmer is the average
temperature on the Equator than at the South Pole?
9. Felix reported that the coldest day on record for his town was five times
colder than yesterday’s temperature, –4o C. What was the temperature of
the coldest day on record in Felix’s town?
10. The elevation of Mt. Everest is 29,028 feet. The elevation of the Dead
Sea is –485 feet. What is the difference in the elevation between Mt.
Everest and the Dead Sea?
11. A scuba diver swam 96 feet beneath the surface of the lake. He then
climbs up 49 feet. What is his depth now?
12. The temperature was –3o C last night. It is now –4o C. What was the
change in temperature?
13. While watching a football game, Lin Chow decided to list yardage
gained as positive integers and yardage lost as negative integers. After
these plays, Lin recorded 14, –7, and 9. What was the net gain or loss?
14. Pythagoras was born about 582 BC. Isaac Newton was born in 1643
AD. How many years apart were they born.?
15. Sonny has $75 to spend. The purchase he wants to make requires $93.
If he borrows the extra money that he needs, how much does he need to
borrow?
16. Two golfers completed one round of golf. The first golfer had a score
of +6 and the second golfer had a score of –3. How many more shots
did the first golfer take?
17. What is the balance as a result of having a credit of $84 and a debit of
$29?
18. The freezing point of water is 32o F. Tim added potassium and found
out that the freezing point went down by 8o F. What was the freezing
point of the water with the added potassium ?
19. The city’s budget is $8,000,000. The city actually spends $12,000,000.
What is the city’s deficit?
20. The local movie theater reported losses of $475 each day for three days.
What was the loss for the three days?
Answer:
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What is the solution to -(4x-3) = -7(9+x) ???
Answer:
The solution is -22
Step-by-step explanation:
The solution of an equation is the value of the variable of the equation
∵ -(4x - 3) = -7(9 + x)
→ Simplify each side
∵ -(4x) - -(3) = -7(9) + -7(x)
∴ (-4x) - (-3) = -63 + (-7x)
→ Remember (-)(-) = (+) and (-)(+) = (-)
∴ -4x + 3 = -63 - 7x
→ Add 7x to both sides
∴ -4x + 7x + 3 = -63 - 7x + 7x
∴ 3x + 3 = -63
→ Subtract 3 from both sides
∵ 3x + 3 - 3 = -63 - 3
∴ 3x = -66
→ Divide both sides by 3
∴ x = -22
∴ The solution is -22
After an earthquake, $$ 3 7 of all claims were paid within a month. Of the remaining claims that had not yet been paid, $$ 2 5 of them were paid within the second month. What fraction of all claims were paid in the second month?
Answer:
6/35
Step-by-step explanation:
After an earthquake, $$ 3 /7 of all claims were paid within a month.
Let the total number of claims be represented by 1
Therefore, the amount of claims that were not paid within the month is calculated as:
1 - 3/7 = 4/7
Hence, 4/7 claims were not yet paid.
Of the remaining claims that had not yet been paid, $$ 2/5 of them were paid within the second month. What fraction of all claims were paid in the second month?
This is calculated as:
2/5 of the claims that were not yet paid
= 2/5 of 4/7
= 2/5 × 4/7
= 6/35
You buy five books that are equal in
price and a DVD for $8. Your tal
comes to $26.50. Write an equation
that would help you determine the cost
of one book.
Answer:
26.50 - 8 = 18.50 then divide by 5
Step-by-step explanation:
this equation will help u find the exact amount of one book
A bicycle store costs $2250 per month to operate. The store pays an average of $40 per bike. The average selling price of each bicycle is $70. How many bicycles must the store sell each month to break even?
Answer:
75
Step-by-step explanation:
Given That :
Operation cost = $2250 per month
Purchase price per bike = $40
Average selling price per bike = $70
How many bicycles must the store sell each month to break even ;
Break even point = point at which there is net profit / loss = 0
Let number of bicycles store must sell = x
Operation cost + (purchase price * Number of bicycles) = selling price * Number of bicycles
2250 + 40x = 70x
2250 = 70x - 40x
2250 = 30x
x = 2250 / 30
x = 75
To break even 75 bicycles must be sold
Which graph represents the function r(x) = |x -21-1
+
+
-6-5-4-3-2-1,
।
+4
1Y
45
1
-1
1123
45
6
3-2
-IN
-2
-
.
O
The graph that represents the function is graph (a)
How to determine the graph?The function is given as:
r(x) = |x -2|-1
The above function is an absolute value function that is shifted to the right by 2 units, and shifted down by 1 units from its parent function f(x) = |x|
Hence, the graph that represents the function is graph (a)
Read more about absolute value graphs at:
https://brainly.com/question/2473412
-0.4w = 4.2 what is this????
Answer: w = -10.5
Step-by-step explanation:
first, divide both sides by -0.4. basically, that leaves "w" alone on one side, and we are just dividing 4.2 by -0.4. that gets us the answer.
Producción de vehículos. En en el año 2000 FIAT produjo 1,135 autos y en el año 2010, produjo 1,825 autos. Teniendo un crecimiento lineal cada año. Determina un modelo lineal (Ecuación General) de dicho comportamiento de producción de autos con los datos que se proporcionan.
Answer:
El modelo lineal del comportamiento de producción de autos es y=69*x -136865
Step-by-step explanation:
Una función real de variable real es una función lineal si es de la forma f(x)=mx+n o y=mx+n. Es decir, la ecuación de la función se corresponde con un polinomio de primer grado. La representación gráfica de una función lineal es siempre una recta. El coeficiente m recibe el nombre de pendiente de la recta y será el responsable de lo inclinada o “pendiente” que se encuentre la recta respecto del eje X mientras que b es el intercepto con el eje Y.
Teniendo dos puntos (x1,y1) y (x2,y2) se puede calcular la pendiente mediante la expresión:
[tex]m=\frac{y2-y1}{x2-x1}[/tex]
Para encontrar el valor de b, una vez reemplazado el valor de m en la ecuación se sustituye los valores de x y de y por los valores de las coordenadas de uno de los puntos, sea el uno o el dos y se despeja b para así obtener su valor.
En este caso y representará la producción de autos mientras que x cada año de producción. Entonces se tiene los siguientes puntos: (2000; 1135) y (2010; 1825)
Por consiguiente, el valor de m será:
[tex]m=\frac{1825-1135}{2010-2000}[/tex]
m=69
Entonces: y=69*x + b. Eligiendo el punto (2000; 1135) y reemplazando:
1135= 69*2000 + b
Se obtiene que el valor de b es:
1135= 138000 + b
-136865= b
Entonces el modelo lineal del comportamiento de producción de autos es y=69*x -136865
A small business spend $23,000 for taxable items last year. The tax rate was 9.5%. How much did the small business pay in taxes last year?
Answer:
$2,185
Step-by-step explanation:
Multiply the amount spent by the tax rate.
23,000 x 9.5% = $2,185
Write a function for the following table
X. Y
-1. -4
0. -2
1. -1
2. -0.5
Please help I only have 20 minutes
Answer: x+1 = y/2
Step-by-step explanation:
X is increasing by 1
(Adding 1 to each number)
For Y, divide it by 2
-4/2 = -2
-2/2 = -1, etc.
Which statements describe the function relating time and the height of the rocket? Check all that apply.The function has constant second differences. The function is cubic. The function can be modeled with a quadratic equation. The domain of the function is {0 ≤ t ≤ 6}. The range of the function is {80 ≤ d(t) ≤ 144}.
Answer:
Step-by-step explanation:
The functions has constant second differences
The function can be modeled with a quadratic equation The domain of the function is (0 < t < 6)
ILL MARK AS BRAINLESS PLS HELP
I’ll mark youyou brainlist I’ll mark youyou brainlist
Answer: 30 degrees
Step-by-step explanation:
Since the are supplementary have them equal to 180 (degrees).
(8r + 206) + (7t + 79)= 18
Combine like terms
15r + 295= 180
Subtract 295 from both sides.
15r + 295-295= 180-295
15r = -105
Divide both sides by 15
15r/15= -105/15
r=-7
Solve for the measure of YMB.
Plug in -7 for r.
7(-7) + 79
-49 + 79
30 = YMB
A picture is originally 3 inches wide and 5 inches long. If Elizabeth wants to have a picture that is 6 inches wide, then how long will the picture be?
A study was done at a local zoo to find the birth weight of birds in ounces (oz) from the tropical rainforest. The results are as follows: 13,20,17,17,18,18,19,17,16,15,15,16,16,16,14,18,18,18 constuct a dot plot
Answer:
Step-by-step explanation:
A dot plot is a graph that illustrates the information of a raw data. It is plotted in such a way that the number of plot for each number gives the frequency of the number in the raw data.
From the given question, the frequency of the weights in the data are:
13 = 1
14 = 1
15 = 2
16 = 4
17 = 3
18 = 5
19 = 1
20 = 1
Total = 18
The dot plot of the data is herewith attached to this answer.
For f(x) = -5x + 4, what is the value of x for which f(x) = 29?
Your answer:
x = 1
x = -5
x = 5
x = -4
Answer:
x=-5
Step-by-step explanation:
f(-5)=-5(-5)+4
*negative multiplied by a neative is a positive*
f(-5)=25+4
f(-5)=29
CAN SOMEONE HELP
Jeremy and his aunt decided to split the 54 flowers evenly between two areas in the front of the house and one in the back. How many flowers did they have for each planting location?
Answer:
18 flowers for each area
Step-by-step explanation:
Do the amount of flowers divided by the amount of areas there are.
ie: 54/3
The third fraction or one-third of 54 will be 18 thus, 18 flowers have for each planting location.
What is the arithmetic operator?Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,
Division = divide any two numbers or variables called division.
For example 4/8
As per the given,
Total number of flowers = 54
54 flowers need to divide into three parts,
54/3 = 18 flowers.
Hence "The third fraction or one-third of 54 will be 18 thus, 18 flowers have for each planting location".
To learn more about the arithmetic operators,
brainly.com/question/25834626
#SPJ2
i really need help with this due soon!! will mark brainliest
Answer:
3.5
Step-by-step explanation:
21/6 = 14/4= 10.5/3
All would be 3.5
Answer:
3.5
Step-by-step explanation:
10.5 divided by 3 is 3.5
14 divided by 4 is 3.5
21 divided by 6 is 3.5
XYZ is 3.5 times bigger than RST
Factor by using GCF:
8n3 + 2n2
Answer: 2n^2. let me know if you need the explanation :).
Step-by-step explanation:
25 points ???? ASAP PLEASE HELP
Answer:
next Slopes are 4 and 20
Step-by-step explanation:
they are
Answer:
to find the slop you need to divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points .
Step-by-step explanation:
Im srry if this didn't help :c its a bit confusing
102 degrees
82 degrees
98 degrees
89 degrees
Answer:
98.
Step-by-step explanation:
98 degrees because 3 and 6 are interior alternate angles.
Answer:
∠ 3 = 98°
Step-by-step explanation:
∠ 6 and ∠ 3 are alternate angles and are congruent, thus
∠ 3 = ∠ 6 = 98°
help me plz ITS URGENT
Answer:
H
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Given
3x + 2y = 19 ( subtract 3x from both sides )
2y = - 3x + 19 ( divide all terms by 2 )
y = - [tex]\frac{3}{2}[/tex] x + [tex]\frac{19}{2}[/tex] ← in slope- intercept form
with slope m = - [tex]\frac{3}{2}[/tex]
Given a line with slope m then the slope of a line perpendicular to it is
[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{-\frac{3}{2} }[/tex] = [tex]\frac{2}{3}[/tex] → H
Ned help please ASAP!!!!!
What is the domain
graph
Answer: The domain is all x-values or inputs of a function and the range is all y-values or outputs of a function. When looking at a graph, the domain is all the values of the graph from left to right. The range is all the values of the graph from down to up.
Answer:
Answer: The domain is all x-values or inputs of a function and the range is all y-values or outputs of a function. When looking at a graph, the domain is all the values of the graph from left to right. The range is all the values of the graph from down to up.
Step-by-step explanation:
3.1 and 1.7 round to the nearest tenth
Answer:
3,2
Step-by-step explanation:
3.1=3
1.7=2
PLZ HELP I WILL MARK BRAINLIEST - What is the volume of a cone (in cubic inches) with a radius of 6 inches and a height of 3 inches?
Use 3.14 for π. Round your answer to the nearest hundredth.
37.68 cubic inches
56.52 cubic inches
100.48 cubic inches
113.04 cubic inches
Answer:
D: 113.04
Step-by-step explanation:
Volume cone formula: V=πr^2h/3
V = π(6)^2 3/3
V = 113.1
I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!
Answer:
113.04 cubic inches
Step-by-step explanation:
First lets identify the equation to find the volume of a cone.
V= [tex]\pi[/tex] r^2 h/3
Next we'll plug in height and radius
h = 3
r = 6
V = [tex]\pi[/tex] 6^2 * 3/3
V = [tex]\pi[/tex] 36 * 3/3
V = [tex]\pi[/tex] 36 * 1
V = [tex]\pi[/tex] 36
V = 36[tex]\pi[/tex]
Now we'll use 3.14 for [tex]\pi[/tex] and times it by the 36
V = 36[tex]\pi[/tex]
V = 113.04
V= 113.04 cubic inches
If you ever need any more help don't be afraid to reach out and I hope this helps!
Modeling club A has 42 male models and 88 female model. Modeling club B has 20 male models fewer than Modeling club A. If the total number of models in both clubs is is 222, how many female models does Modeling club B have?
Given :
Modeling club A has 42 male models and 88 female model.
Modeling club B has 20 male models fewer than Modeling club A.
To Find :
If the total number of models in both clubs is 222, how many female models does Modeling club B have.
Solution :
Male model in club B is 20 less than male model in club A.
[tex]M_B = M_A-20\\\\M_B = 42-20\\\\M_B = 22[/tex]
It is given that total number of models are 222.
[tex]M_A + M_B + F_A + F_B = 222\\\\42 + 22 + 88 + F_B = 222\\\\F_B = 222-152\\\\F_B = 70[/tex]
Therefore, female models on club B are 70.
if f(x)=9x-2 find the value of expression f(5)
Answer:
f(x)=43
Step-by-step explanation:
you put the 5 in the places where the x is so
F(5)=9(5)-2
45-2=43
Bernie got 15 out of 40 math problems correct on his test. What percent did he get
correct?
Answer:
37.5%
Step-by-step explanation:
40÷100=0.4
15÷0.4=37.5
Answer:
the answer is 37.5%
Step-by-step explanation:
because thats what
A computer programmer had two files. The first was 49.71 gigabyes and the second was 44.5
gigabytes. What is the total file size of both?
Answer:
94.21 gigabytes
Step-by-step explanation:
add 49.71 to 44.5 to get 94.21
