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ValentinkaMS [17]
4 years ago
12

If a = 3 what is the value of b in the equation 2a+b=13? And can you explain?

Mathematics
2 answers:
sladkih [1.3K]4 years ago
8 0

Answer:

b=7

Step-by-step explanation:

Plug 3 into a since a=3.

2(3)+b=13

Then solve for 2(3)

6+b=13

Now isolate the b, so move the 6 to the other side. (Basically subtract 6 from both sides)

b=13-6

b=7

Cerrena [4.2K]4 years ago
4 0
When there is a letter next to a number you multiply so it would be 2 x A and a is 3 so 2x3=6 but to get the answer you have to subtract 6 from the total 13 and you get 7

So the answer is 7!
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A safe has a 4-digit lock code that does not include zero as a digit and no digit is repeated. What is the probability of a lock
Margarita [4]

Answer:

A. 9

B. 3,024

C. 4

D. 24

hope this helps!

8 0
3 years ago
Read 2 more answers
A function follows the rule y = -75 - 5x. When the function's output is 25, the equation is 25 = -75 - 5x. What is the function
svetlana [45]

Answer:

The function input is -20 when the output is 25

Step-by-step explanation:

we have

y=-75-5x

where

y is the dependent variable or output

x is the independent variable or input

If the output is 25

then

y=25

substitute

25=-75-5x

Solve for the function input is the same that solve for x

Isolate the variable x

Adds 5x both sides

25+5x=-75-5x+5x

25+5x=-75

subtract 25 both sides

25+5x-25=-75-25

5x=-100

Divide by 5 both sides

x=-20

therefore

The function input is -20 when the output is 25

4 0
3 years ago
Read 2 more answers
juan needs to measure 6 cups of flour for a recipe.he only has a 1/4 cup measuring cup.how many times must he fill the measuring
Luba_88 [7]

Answer:

Juan would need to fill up the 1/4 measuring cup 24 times.

Step-by-step explanation:

So to measure one cup of flour with a 1/4 measuring cup, you would need to fill up the 1/4 measuring cup 4 times. Since we want 6 cups, you would need to fill up the 1/4 measuring cup 24 times. 6 times 4 = 24. Hope this helps!

7 0
4 years ago
Which term describes point U?
svlad2 [7]
The correct answer is B 

7 0
3 years ago
-8(-8+2)-4 solve please
Anvisha [2.4K]

Answer:

44

Step-by-step explanation:

-8(-8+2)-4

1) Simplify <u>inside the parenthesis</u>: (-8+2)

-8(-6)-4

2) Multiply -8 and -6:

48-4

3) Simplify:

44

3 0
3 years ago
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