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3 years ago

Whats the answer to 7x10¹=7x10=

Mathematics

1 answer:

tekilochka [14]3 years ago

7 0

The answer to 7×10 is 70. Multiplication is fast adding. For example, 10+10+10+10+10+10+10=70

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A store owner spends 7x + 13 dollars on two orders of boxes of light bulbs, including shipping.

Alex Ar [27]

Answer:

$B = 4x + 8$

A box = $11

Step-by-step explanation:

Given

$Total = 7x + 13$

Represent the first order with A and the second with B.

So, we have:

$A = 3x + 5$

Solving (a): Find B.

To find B, we make use of:

$A + B = Total$

Make B the subject

$B = Total - A$

Substitute values for Total and A

$B = 7x + 13 - (3x + 5)$

Open bracket

$B = 7x + 13 - 3x - 5$

Collect Like Terms

$B = 7x - 3x + 13 - 5$

$B = 4x + 8$

Solving (b): Cost of a box of light bulb

This means that:

$Total = 90$

Substitute 7x + 13 for Total

$7x + 13 = 90$

Collect Like Terms

$7x = 90 - 13$

$7x = 77$

Make x the subject

$x = \frac{77}{7}$

$x = 11$

6 0

4 years ago

An elephant needs to drink at least 40 gallons of water each day. A drinking tank contains 4 gallons of water. The elephant has

kirill115 [55]

Answer:

x≥4

Step-by-step explanation

24+4x≥40. Subtract 24 from both sides to get 4x≥16. Divide both sides by 4 to get x≥4.

6 0

3 years ago

Read 2 more answers

Find The volume of a cilinder

Alinara [238K]

Answer:

Step-by-step explanation:

calculated it with scientific calculator

7 0

4 years ago

Abeline is creating a box design for a company. The front, back, and sides will be painted, but the top and bottom will not be p

just olya [345]

Answer:

it is the first one

Step-by-step explanation:

4 0

3 years ago

Find the sum of the interior angle measures of a convex 21-gon

Advocard [28]

Answer:

3420°

Step-by-step explanation:

The sum of angle measures of an n-gon is ...

angle total = (n-2)×180°

For n = 21, the angle total is ...

21-gon total = (21 -2)×180° = 3420°

7 0

4 years ago