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IRINA_888 [86]
3 years ago
9

What’s the correct answer for this

Mathematics
2 answers:
Leviafan [203]3 years ago
7 0

Answer:

45 degrees

Step-by-step explanation:

The interior angles of a triangle add to 180 degrees.

<ABC + <BCA + <CBA = 180

We know <ABC is 90 degrees, and <BCA is 45, so we can substitute them in.

90+45+<CBA=180

Combine like terms by adding 90 and 45

135+<CBA=180

Subtract 130 on both sides to get the variable by itself

<CBA=45

Olenka [21]3 years ago
5 0
Given 2 angle : 45 and 90 (right angle)
==> 180-45-90 = 45
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A runner starts at the beginning of a runners' path and runs at a constant rate of 6 mi/hr. Fifteen minutes later a second runne
MatroZZZ [7]

Answer:

45 minutes

Step-by-step explanation:

let after t hours they meet after the second runner starts.

15 minutes=1/4 hour.

6(t+1/4)=8t

6t+6/4=8t

8t-6t=6/4

2t=3/2

t=3/2* 1/2=3/4 hours=45 minutes

6 0
3 years ago
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How do I do Slope Intercept Form Step to Step? PLEASE HELP!
Arlecino [84]

So if an equation was f(x)=x+4

you would automatically change f(x) into y

so it would y-y=x(x-x)

so you plug in the x and 4 which is the first y and x

y-4=x(x-x)

you switch the numbers around

so your final answer would be x-4

4 0
3 years ago
What is the reciprocal of a negetive number? ​
lana [24]

Answer:

The reciprocals of a number is sometimes called the Multiplicative Inverse of the number. The product of a negative number and its reciprocal equals 1. If the number is negative then the reciprocal must also be negative to produce a product of +1. The reciprocal of -4 is -1/4.

Step-by-step explanation:

3 0
3 years ago
3x=5x-9 pls help ?!!?!?!?!?!?!?!?!??!!?1/
lbvjy [14]

Answer: x = 4.5

Step-by-step explanation:

1) Reorder the terms:

3x = -9 + 5x

2) Solving

3x = -9 + 5x

3) Solving for variable 'x'.

4) Move all terms containing x to the left, all other terms to the right.

5) Add '-5x' to each side of the equation.

3x + -5x = -9 + 5x + -5x

6) Combine like terms: 3x + -5x = -2x

-2x = -9 + 5x + -5x

7) Combine like terms: 5x + -5x = 0

-2x = -9 + 0

-2x = -9

8) Divide each side by '-2'.

x = 4.5

9) Simplifying

x = 4.5

6 0
3 years ago
Read 2 more answers
Identify which of the following is not equivalent to 2 3/4.
mezya [45]

The figure that is not equivalent to 2¾ is 2¼ × 2½. That is option B.

<h3>Simplification of equivalent fractions</h3>

Simplification is a process that is used to make a fraction appear in its simplest forms.

The fraction given is = 2¾

The simplification of the fraction= 2^3/4 = 2

But simplification of 2¼ × 2½ is equal to;

2¼= 0.5

2½= 1

Therefore 2¾ is not equivalent to 2¼ × 2½ when simplified.

Learn more about fraction here:

brainly.com/question/78672

#SPJ

6 0
2 years ago
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