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Tanya [424]
3 years ago
15

NEED HELP ASAP!!!!!!!!!!!

Mathematics
1 answer:
Ivanshal [37]3 years ago
4 0

Answer:

a.  \frac{x + 3}{21}=\frac{x + 1}{15}

b. x = 4 (see steps below)

Step-by-step explanation:

Since the two polygons are similar, the sides are proportional to each other.  Using a proportion, you can solve for 'x' using cross-multiplication and division:

\frac{smaller}{larger}=\frac{x + 3}{21}=\frac{x + 1}{15}

Cross-multiply: 15(x + 3) = 21(x + 1)

Distribute:  15x + 45 = 21x + 21

Subtract '15x' from both sides: 15x + 45 - 15x = 21x + 21 - 15x or 45 = 6x + 21

Subtract '21' from both sides: 45 - 21 = 6x + 21 - 21 or 24 = 6x

Divide by 6 on both sides: 24/6 = 6x/6

Solve for x: x = 4

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mario62 [17]

Answer:

63+48= 3(21+16)

Step-by-step explanation:

Check answer:

Distribute 3(21+16)

3(21)+3(16)

63+48

8 0
3 years ago
Juan bought a used bike from his uncle $20.6 each month for 2 years. What was the total amount Juan paid for the bike?
Serggg [28]

Answer:

$494.40

Step-by-step explanation:

8 0
3 years ago
What is 6/5 of 7003=<br> PLEASE HELP AGAIIIN!!!!!!!!!
ikadub [295]

Answer:

8,403.6

Step-by-step explanation:

6/5 of 7003

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Hence 6/5 of 7003 is 8,403.6

4 0
2 years ago
A granite monument has a volume of 25,365.4 cm3. The density of granite is 2.7 g/cm3. Use this information to calculate the mass
Vaselesa [24]

Answer:

<h3>The answer is 68,486.58 g</h3>

Step-by-step explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume of granite monument =

25,365.4 cm³

density = 2.7 g/cm³

The mass of the granite monument is

mass = 25,365.4 × 2.7

We have the final answer as

<h3>68,486.58 g</h3>

Hope this helps you

6 0
3 years ago
I need some help with this​
Contact [7]
The answer for the first one is city c
8 0
3 years ago
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