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yawa3891 [41]
2 years ago
12

Pls help, urgent!!!!! Will try to give brainliest

Mathematics
2 answers:
Salsk061 [2.6K]2 years ago
8 0

Answer:

60

Step-by-step explanation:

-2 x 4 = -8

-2 x -2 = 4

-8 - (-4) = -4

(keep change flip)

-4 - -4(3) 4x4x4= -64

-4 - (-64)

60

lys-0071 [83]2 years ago
7 0

Answer:

1: 86 inches is the width

2: -20

Step-by-step explanation:

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A block of concrete is 1m long, 50cm wild and 4cm thick. 1.calculate the volume of the block in cm3 .2.if 1cm has a mass of 2.7g
Nonamiya [84]

9514 1404 393

Answer:

  • 20,000 cm³
  • 54 kg

Step-by-step explanation:

1 m is 100 cm, so the volume is ...

  V = LWH

  V = (100 cm)(50 cm)(4 cm) = 20,000 cm³ . . . volume

__

The mass is ...

  (20,000 cm³)(2.7 g/cm³) = 54,000 g = 54 kg

The mass of the block is 54 kg.

7 0
3 years ago
What is the SUM of the angle measures in a nonagon (9 sides)?
GenaCL600 [577]

Answer:

All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the angles, we know that the sum of all the angles is 1260 degrees (from above)... And there are nine angles... So, the measure of the angle of a regular nonagon is 140 degrees.

Step-by-step explanation:

7 0
3 years ago
Gail baked some cookies. She sold 2/7 of the cookies on Monday. She sold 1/3 more of the cookies on Tuesday than on Monday. What
lorasvet [3.4K]
2/7 x 1/3 = 2/ 21

In simplest form 2/21 = 2/21

Answer + 2/21
3 0
3 years ago
1.3.33 Question Help A certain triangle has a perimeter of 3078 mi. The shortest side measures 71 mi less than the middle side,
maksim [4K]

Answer:

the shortest side is 855 miles long.

Step-by-step explanation:

a + b + c = 3078 miles

a = b - 71

c = b + 371

=>

(b-71) + b + (b+371) = 3078

3b + 300 = 3078

3b = 2778

b = 926 miles

a = 926 - 71 = 855 miles

c = 926 + 371 = 1297 miles

8 0
3 years ago
0 ft elevation, diver is underwater at depth of 138 ft. In this area, the ocean floor has a depth of 247 ft. A rock formations r
KiRa [710]
We know that the ocean floor has a depth of 247 ft, and we also know that the diver is<span> underwater at depth of 138 ft, so its distance from the ocean floor will be:
</span>247-138=109 ft
<span>
Now, the </span>rock formations rises to a peak 171 to above the ocean floor, so to find <span>how many feet below the top of the rock formations is the diver, we are going to subtract the distance to the driver form the ocean floor from the rock formations height:
</span>171-109=62 ft
<span>
We can conclude that the diver is 62 feet </span><span>below the top of the rock formations.</span>

3 0
3 years ago
Read 2 more answers
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