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Ainat [17]
4 years ago
12

I need help with this problem 2•1/2+4(4•2-7)

Mathematics
1 answer:
Pepsi [2]4 years ago
3 0

Answer:

5

Step-by-step explanation:

  • 2×1/2 + 4×(4×2 - 7) =          ⇒ multiplication
  • 1 + 4×(8 - 7) =                      ⇒ parenthesis
  • 1 + 4×1 =                              ⇒ multiplication
  • 1 + 4 =                                 ⇒ addition
  • 5                                         ⇒ answer
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(Algebra 1 ~ High School)
Ivan

Step 2 I believe. You are supposed to find the absolute value before adding

5 0
4 years ago
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Calculate the density of a material that has a mass of 100 g and a volume of 25<br> cm 3 .
irakobra [83]
4g/cm^3

D = M/V
100g/25cm^3 = 4g/cm^3
5 0
4 years ago
Layla wants to build a wooden box with a volume of 454545 cubic centimeters. She started with a width of 3\text{ cm}3 cm3, start
gogolik [260]

The correct question is;

Layla wants to build a wooden box with a volume of 45 cubic centimeters. She started with a width of 3 cm and a height of 3 cm. How long should Layla make the box?

Answer:

Box is 5 cm long.

Step-by-step explanation:

We are given;

Volume; V = 45 cm³

Width; w = 3 cm

Height;h = 3 cm

Now, this box has the shape of a cuboid and the volume of a cuboid is given as;

V = l × w × h

Where;

L is length

w is width

h is height

Making L the subject, we have;

V/wh = L

Plugging in the relevant values to obtain;

L = 45/(3 × 3)

L = 45/9

L = 5 cm

3 0
3 years ago
Figure XYZ is reflected about the Y axis to obtain figure X’Y’Z’
vlabodo [156]

Even thought the triangle is reflected, it still maintains the same shape. The two are congruent to each other.

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5 0
3 years ago
Nancy invested $750 per month in a 401k that earned 6% annual return for 30 years. Alex
xxMikexx [17]

Answer:

  • A and B

Step-by-step explanation:

<u>Nancy's balance:</u>

  • 750*(1 + 0.06)^30 = $4308 <em>rounded to whole number</em>

<u>Alex's balance:</u>

  • 1500*(1 + 0.06)^15 = $3595 <em>rounded to whole number</em>

<u>Options:</u>

A. Nancy's balance would be greater than Alex's in the end.

  • Correct

B. Nancy's balance is $4,308 and Alex's balance is $3,595.

  • Correct

C. Alex's balance would be greater than Nancy's in the end.

  • Incorrect

D. The investment and balance would be the same in the end.

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5 0
3 years ago
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