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Trava [24]
3 years ago
14

Worth 30 points. i really need help.

Mathematics
1 answer:
omeli [17]3 years ago
5 0

Answer: a) w = -26, -2

b) x = -4,  -1

c) k = 17, -1

d) z = 65, 935

Multiple choice: D)

Step-by-step explanation:

a) (w+26)(w+2) = 0

w = -26, w = -2

b) (x+4)(x+1) = 0

x = -4, x = -1

c) (k-17)(k+1) = 0

k = 17, k = -1

d) (z-65)(z-935) = 0

z = 65, x z 935

Multiple Choice

D)

Multiply all terms by 2.

<h2><u><em>PLEASE MARK AS BRAINLIEST!</em></u></h2>
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grigory [225]

Answer:

There is only one shape who is similar to A which is the pink one.

Step-by-step explanation:

3 0
3 years ago
Myra is evaluating the expression –31.7 + 4.5x, when x = 2.1.     –31.7 + 4.5(2.1) –27.2(2.1) –57.12 What was Myra’s error?
netineya [11]

Answer:

Myra's Error: Addition instead of multiplication

Correct answer: -22.25

Step-by-step explanation:

Myra is evaluating the expression.

Expression: -31.7 + 4.5x  for x=2.1

Step 1: Put x=2.1 into expression            

      Myra's Steps                               Correct Step

    -31.7 + 4.5(2.1)                            -31.7 + 4.5(2.1)

Thus, first step correct.

Step 2: Simplify 4.5(2.1) by multiply

      Myra's Steps                               Correct Step

          -27.2(2.1)                                -31.7 + 9.45

Thus, second step incorrect.

Therefore, Myra's error in second step. She did addition(-31.7+4.5)  instead of multiplication(4.5×2.1)

Step 3: Combine like terms

-31.7 + 9.45 = -22.25

Hence, The correct answer of the given expression is -22.25  

3 0
3 years ago
Read 2 more answers
. solve the inequality: 7x 2 &gt; 54.
alukav5142 [94]
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4 years ago
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lutik1710 [3]

Answer:

mean=87

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Step-by-step explanation:

mean=sum of test score/number of subject

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mean=522/6

mean=87

Literal meaning of median is medium.

To find the number which lies in the medium, we must rearrange the number in ascending.

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79, 85, 86, 88, 91, 93

86+88/2=87

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7 0
4 years ago
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fgiga [73]

Answer:

5 miles per hour

Step-by-step explanation:

Anna runs 6 1/4 miles in 1 1/4hours. What is her rate in miles per hour?

          6 1/4 miles  /  1  1/4 hours    =

          25/4 miles /   5/4 hours      =

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7 0
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