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Oliga [24]
3 years ago
5

Idk pls help me I really need help with my math

Mathematics
1 answer:
Natali5045456 [20]3 years ago
3 0
Question 8=d
Question 9=c

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Is 2(2x + 3y) = 4x + 6y true or false and how do you know?
PIT_PIT [208]

Answer:

True because when you multiply the 2 by everything in the parentheses you get 4x + 6y which is 4x + 6y = 4x + 6y. and when you solve it you'll get 0 = 0

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
2. The sum of the measures of angle X and angle Y is 90. If the measure of angle X'is 30 less than
dimulka [17.4K]

Answer:

The measure of angle x is 50 degrees

Step-by-step explanation:

we know that

x+y=90 ----> equation A

x=2y-30 ----> equation B

solve the system by substitution

substitute equation B in equation A

(2y-30)+y=90

solve for y

3y=90+30

3y=120

y=40^o

Find the measure of angle x

x=2(40)-30=50^o

therefore

The measure of angle x is 50 degrees

5 0
3 years ago
Harriet is 5 years younger than her brother Charlie. If their ages sum to 37 years, how old is Harriet? Currently stuck on this
kvv77 [185]

Answer:

Harriet is 16 years of age

Step-by-step explanation:

(x-5)+x=37

2x=42

x=21

21-5=Harriet's Age

6 0
2 years ago
40 POINTS AND BRAINLIEST
ladessa [460]

Answer:

120

Step-by-step explanation:

As x goes from 1 to 2, y increases by 4 from 4 to 8

As x goes from 2 to 3, y increases by 4 from 8 to 12

We increase by 4 each time

The formula for an arithmetic sequence is

an = a1+d(n-1)

where a1 is the first term which is 4

d is the common difference or the number we add each time which is 4

n is the term we are looking for which is 30

a30 = 4 +4 (30-1)

a30 = 4+4(29)

       = 4+116

      = 120

5 0
3 years ago
Read 2 more answers
Use inverse operations to solve the equation. -5x=65
kicyunya [14]
Divide both sides by -5 to get x= -13
7 0
3 years ago
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