I need help and thanks

Mathematics

1 answer:

DochEvi [55]3 years ago

8 0

(20/4)×7
280÷(7+3)×7
175÷8=21.875(round off to 22 as no.of chairs cannot have decimal place)

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What is the answer for 4a+2b=16

Dmitry_Shevchenko [17]

First, move all terms containing a to the left, all other terms to the right.

Add '2b' to each side of the equation.4a + -2b + 2b = 16 + 2b

Combine like terms: -2b + 2b = 04a + 0 = 16 + 2b4a = 16 + 2b

Divide each side by '4'.a = 4 + 0.5b

Answer

= 4 + 0.5b

Happy studying ^-^

3 0

3 years ago

WILL GIVE Brainelst

Alexeev081 [22]

Step-by-step explanation:

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3 years ago

Leah claims that these figures are not similar. When she compared the heights, she wrote 27. Then she compared the bases and got

Flauer [41]

Answer:

<h2>Leah is actually wrong, because those rectangles are similar.</h2>

Step-by-step explanation:

Remember that similarity is about having proportional sides and congruent angles. When we have congruent sides, then those rectangles are congruent not similar.

In this case, to find the similarity, Leah should compare bases and heights thorugh division, because the ratio between heights and the ratio between bases must be equal. So, let's divide.

$\frac{21}{6}=3.5$