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viktelen [127]
1 year ago
11

-5+7=7+-5 is this number sentence true or false

Mathematics
2 answers:
Olin [163]1 year ago
8 0

Answer:

True.

Step-by-step explanation:

vovikov84 [41]1 year ago
7 0

Answer: True

Step-by-step explanation:

We can simplify each of the expressions on either side to see if they are equal.

Left side: -5+7=7-5= 2

Right side: 7+-5=7-5= 2

Yes, they are equal.

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What is the surface area of this triangular prism? The base of each triangle is 42 m and the height of the triangular base is 20
shutvik [7]

<u>Given</u>:

The base of each triangular base is 42 m.

The height of each triangular base is 20 m.

The sides of the triangle are 29 m each.

The height of the triangular prism is 16 m.

We need to determine the surface area of the triangular prism.

<u>Surface area of the triangular prism:</u>

The surface area of the triangular prism can be determined using the formula,

SA=bh+(s_1+s_2+s_3)H

where b is the base of the triangle,

h is the height of the triangle,

s₁, s₂ and s₃ are sides of the triangle and

H is the height of the prism.

Substituting the values, we get;

SA=(42)(20)+(42+29+29)(16)

SA=840+(100)(16)

SA=840+1600

SA=2440

Thus, the surface area of the triangular prism is 2440 m²

8 0
3 years ago
Kelsey has a 88% discount coupon for a wedding store. She sees a new prom dress that she wants to buy. After the 88% discount wa
kherson [118]
'34 dollars do .88 ÷ 30 to find out the cost
6 0
2 years ago
Read 2 more answers
2
Zigmanuir [339]

Answer:

The weight of the water in the pool is approximately 60,000 lb·f

Step-by-step explanation:

The details of the swimming pool are;

The dimensions of the rectangular cross-section of the swimming pool = 10 feet × 20 feet

The depth of the pool = 5 feet

The density of the water  in the pool = 60 pounds per cubic foot

From the question, we have;

The weight of the water in Pound force = W = The volume of water in the pool given in ft.³ × The density of water in the pool given in lb/ft.³ × Acceleration due to gravity, g

The volume of water in the pool = Cross-sectional area × Depth

∴ The volume of water in the pool = 10 ft. × 20 ft. × 5 ft. = 1,000 ft.³

Acceleration due to gravity, g ≈ 32.09 ft./s²

∴ W = 1,000 ft.³ × 60 lb/ft.³ × 32.09 ft./s² = 266,196.089 N

266,196.089 N ≈ 60,000 lb·f

The weight of the water in the pool ≈ 60,000 lb·f

6 0
2 years ago
For which equations is 8 a solution? Check all that apply.
ki77a [65]

Answer:

The 2nd, 3rd, and 8th choice

Step-by-step explanation:

6 0
3 years ago
R = 5k - 6<br>work out the value of R when k=3​
viva [34]

Answer:

R=9

Step-by-step explanation:

In the equation, replace k with 3.

R=5(3)-6

Multiply.

R=15-6

Subtract

R=9

I hope this helps!

4 0
2 years ago
Read 2 more answers
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