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hodyreva [135]
3 years ago
13

Can somebody plz help answer all these questions correctly thanks so much!!!

Mathematics
2 answers:
Nataly_w [17]3 years ago
5 0

Answer: 1. 6+3=9

2. 9-7 = 2

3. 7(3) = 21

4. 8+0 = 8

5. 4(4)+5 = 16+5 = 21

6. 7(5)-4= 35-4= 31

7. 19-3(2)= 19-6 = 13

8. 11+ 3(4)= 11+ 12 = 23

Step-by-step explanation:

Just plug in whatever variable of the variable it says for that variable and solve!

scZoUnD [109]3 years ago
5 0

Answer:

Step-by-step explanation:

1. 9

2. 2

3.21

4. 8

5. 21

6. 31

7. 13

8. 23

Hope this helps!

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Write an integer that represents 5 inches of snow melting. *
miss Akunina [59]

Answer:

-5

Step-by-step explanation:

There was five inches of snow, correct? Now, the five inches are melting. It's kinda like subtraction.

5 - 5

6 0
4 years ago
Jacob scored 85%, 90%, and 74% on his first three tests. Then he scored 99%, 84% and 75% on his next three
AlekseyPX
The average of the first three is 83 (85 + 90 + 74)/3
The average of the next 3 is 86.

The difference is 3
3 0
3 years ago
Bill's new porch is rectangular, with an area of 50 square feet. If the length of the porch is two times the width, what is the
Gwar [14]
1. The formula for the area of a rectangle is:

 A=LxW

 L: The lenght of the rectangle (L=2W).
 W: The width of the rectangle.

 2. Let's substitute L=2W into the formula A=LxW:

 A=LxW
 A=2WxW
 A=2W²

 3. When we clear "W", we obtain:

 W²=A/2
 W=√(A/2)

 4. We already know the value of "A", so:

 W=√(50 ft²/2)
 W=√(25 ft²)
 W=5 ft

 5. Now, we must substitute the value of "W", into L=2W:

 L=2W
 L=2(5 ft)
 L=10 ft

 6. The perimeter of a rectangle is:

 P=2L+2W

 7. We know the value of "L" and "W", therefore:

 P=(2x10 ft)+(2x5 ft)
 P=20 ft+10 ft
 P=30 ft

 W<span>hat is the perimeter of the porch? 
</span>
 The answer is: 30 ft
4 0
4 years ago
Simplify the expression 6 + (4h + 3).
Levart [38]

Let's simplify step-by-step.

6+4h+3

Combine Like Terms:

=6+4h+3

=(4h)+(6+3)

=4h+9

Answer:

=4h+9

7 0
3 years ago
Which expressions can be used to find m∠ABC? Check all that apply.
valina [46]

Answer:

\cos^{-1}(\frac{6.3}{9.8})

\sin^{-1}(\frac{7.5}{9.8})

Step-by-step explanation:

Recall the mnemonics SOH-CAH-TOA

The sine ratio is the length of the opposite side expressed over the hypotenuse.

\sin m\angle ABC=\frac{7.5}{9.8}

Take the sine inverse of both sides to get;

m\angle ABC=\sin^{-1}(\frac{7.5}{9.8})

The cosine ratio is the length of the adjacent side expressed over the hypotenuse.

\cos m\angle ABC=\frac{6.3}{9.8}

Take the cosine inverse of both sides to get;

m\angle ABC=\cos^{-1}(\frac{6.3}{9.8})

4 0
4 years ago
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