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3 years ago

Evaluate 8.1v +7.5w when v = 7 and w = 8

Mathematics

2 answers:

Sholpan [36]3 years ago

7 0

Answer:

116.7

Step-by-step explanation:

8.1v + 7.5 w

since v= 7 and w= 8

8.1(7) + 7.5(8)

= 56.7 + 60

= 116.7

12345 [234]3 years ago

4 0

8.1 times 7 equals 56.7
7.5 times 8 equals 60
When you add these two numbers together, you get 116.7. This is your answer.

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Calculate the simple interest rate. (Round your answer to one decimal place.)

GrogVix [38]

Answer:R = 9.1667%/year

Step-by-step explanation:

Solving our equation

r = 330 / (3600 × 1) = 0.09166667

r = 0.09166667

converting r decimal to a percentage

R = 0.09166667 × 100 = 9.1667%/year

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from a principal of $3,600.00

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3 years ago

What percent of 200 is 50? Pick the proportion that could be used to solve.

GenaCL600 [577]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

A spherical ball with a volume of 972 π π in. 3 3 is packaged in a box that is in the shape of a cube. The edge length of the bo

IRINA_888 [86]

Remember that the equation of the volume of a sphere is: $V= \frac{4 \pi r^{3}}{3}$
where
$V$ is the volume of the sphere
$r$ is the radius of the sphere
We know from our problem that the volume of our spherical ball is $972 \pi in^{3}$ , so $V=972 \pi$ . Lets replace that value in our equation to find $r$ :
$V= \frac{4 \pi r^{3}}{3}$
$972 \pi = \frac{4 \pi r^{3 }}{3}$
$r^3= \frac{3(972 \pi )}{4 \pi }$
$r^{3}=729$
$r= \sqrt[3]{729}$
$r=9$
Now that we have the radius of our spherical ball, we can find its diameter using the equation: $d=2r$ :
$d=2(9)$
$d=18$

Since we know for our problem that t<span>he edge length of the box is equal to the diameter of the ball, the length of one side of our square is 18 in.
Now, to find the volume of our cube, we are going to use the equation: </span> $V=a^3$
where
$V$ is the volume of the cube
$a$ is a side of the cube (remember that all the sides of a cube are equal)
$V=18^3$
$V=5832$

We can conclude that the volume of our cube is 5832 $in^{3}$ .

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3 years ago

What’s 1 divided by 1/3 for IXL?

djyliett [7]

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3 years ago

Find the equation of the line. Use exact numbers

dsp73

Answer:

y= 3x + 3

Step-by-step explanation:

From the graph we get 2 points: (-1,0) and (0,3)

(0,3) tells us that b = 3

and we use the equation $\frac{y1-y2}{x1-x2}$ to calculate m

m = $\frac{3-0}{0- (-1)}$ = 3/1 = 3

so plugging m and b into y = mx + b gives us

y = 3x + 3

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3 years ago