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lesya [120]
3 years ago
7

A² +6² a-b if a = 3 and b = 4 Evaluate each expression using the variable replacements.

Mathematics
2 answers:
enot [183]3 years ago
4 0

Answer:

<h2>-45</h2>

Step-by-step explanation:

<h3>let a= 3 and b= 4</h3><h3 /><h3>a² + 6² / a - b</h3><h3>= 3² + 6² / 3 - 4</h3><h3>= 9 + 36 / -1</h3><h3>= 45 / -1</h3><h3>= -45</h3>

\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}

Arturiano [62]3 years ago
3 0
Knowing what the variables are means that all we have to do is substitute:
[ ( 3 ) ^2 + ( 4 ) ^2 ] / 4 - 3 =
( 9 + 16 ) / 1 =
25
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Please help answer <br> Will give brainlst
Debora [2.8K]

Answer:

I am pretty sure it is B

Step-by-step explanation:

:)

6 0
2 years ago
Cara evaluated the expression below. (4(7-13))÷3+(-4)²-2(6-2) =(28-13)÷3+(-4)²-2(4) =15÷3+16-8 =5+16-8 =13 What was Cara’s error
mezya [45]

Answer:

the answer is the first one, Cara multiplied only 4 and 7 together and did not multiply 4 and 13

Step-by-step explanation:

if you look through the question you can see that Cara evaluated the (-4)^2 correctly because a negative multiplied by a negative gives you a positive thus (-4)*(-4)= 16, then next you can see that Cara subtracted 2 from 6 correctly because (6-2)= (4), and last but not least Cara did multiply 2 by 4 correctly because 2*4 or 2(4) =8 so as you can see the answer is the first one

3 0
3 years ago
Read 2 more answers
Simplify 4xy + 9x - 3y + z + xy
Contact [7]
4xy + 9x - 3y + z + xy

 Combine Like Terms<span>
 =<span><span><span><span><span><span>4x</span>y</span>+<span>9x</span></span>+<span>−<span>3y</span></span></span>+z</span>+<span>xy</span></span></span><span>
   =<span><span><span><span>(<span><span><span>4x</span>y</span>+<span>xy</span></span>)</span>+<span>(<span>9x</span>)</span></span>+<span>(<span>−<span>3y</span></span>)</span></span>+<span>(z)</span></span></span><span>
   =<span><span><span><span><span>5x</span>y</span>+<span>9x</span></span>+<span>−<span>3y</span></span></span>+z</span></span>

Answer <span>=<span><span><span><span><span>5x</span>y</span>+<span>9x</span></span>−<span>3y</span></span>+<span>z


I hope this helps, can I get brainliest thanks</span></span></span>
6 0
3 years ago
Read 2 more answers
Vijay has a collection of 50 number cubes that are each 1 cubic inch. He finds a box that is 4 inches high.He fits 12 cubes into
Lera25 [3.4K]

No, Vijay cannot fit all cubes into the box.

Solution:

Total number of cubes = 50

Volume of each cube = 1 cubic inch

Number of cubes fit in the bottom of the box = 12

Area of the box<em> = l</em> × <em>b</em> = 12 square inch

Height of the box = 4 inch

Volume of the box = <em> l</em> × <em>b </em>× h

                               = 12 × 4

Volume of the box = 48 cubic inch

So, 48 cubes can only fit in the box.

Hence, Vijay cannot fit 50 cubes into the box.

8 0
3 years ago
Trigonometry<br> Use trigonometry functions to find the area <br> In ΔABC, AB=21, AC=16, and m
KIM [24]

Answer:

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Step-by-step explanation:

½ × 21 × 16 × sin(67)

154.644815388

7 0
3 years ago
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