3 years ago

Which equation best represents this situation? the number 84 increased by an unknown number is equal to 115.

Mathematics

1 answer:

DedPeter [7]3 years ago

4 0

Your equation is n+84=115

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solve the eqution 9.95+0.30s=c c is the amount of dollars a website charges for downloading songs s stands ffor number of songs

lutik1710 [3]

9.95 + 0.30s = C

9.95

9.95 + 10.5 = C

C = 20.45

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5 0

2 years ago

Multiply the two mixed numbers 4 1/2 x 3 2/3 simplify your answer and write it as a mixed number

konstantin123 [22]

Answer: 16 1/2

Step-by-step explanation:

It's easiest to multiply improper fractions and then to convert them back into mixed numbers, so 4 1/2 would become 9/2 and 3 2/3 would become 11/3. $\frac{9}{2} *\frac{11}{3}$ = 99/6. Now just simplify to 33/2 and then convert back into a mixed number. 16 1/2

8 0

3 years ago

Need help anything helps thanks

yKpoI14uk [10]

A binomial squared is written like

$x^2+2ax+a^2$

So, we have $2a=6 \iff a=3$

So, we want to complete the square $(x+3)^2 = x^2+6x+9$

We can add and subtract 9 to write

$x^2+6x = x^2+6x+(9-9) = (x^2+6x+9)-9 = (x+3)^2-9$

5 0

3 years ago

Rewrite the following equation into slope intercept form 3x - 4y = 20 and identify the slope and y - intercept.

Vladimir [108]

You solve for y and get
y=3/4x-5
Slope is 3/4
Y intercept is -5

8 0

2 years ago

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The volumes of two similar solids are 1331 m3 and 216 m3. the surface area of the larger solid is 324 m3. what is the surface ar

zavuch27 [327]

Two solids are said to be similar when their corresponding sides and angles are proportional and congruent. Since the solids here are similar, we calculate as follows:

Assuming the solid is a sphere
V1/V2 = r1^3 / r2^3 = 1331/216 = 6.16203
r1/r2 = 11/6

A1/A2 = (r1/r2)^2
324/A2 = (11/6)^2
A2 = 42.84 m^2

8 0

3 years ago

Read 2 more answers