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ankoles [38]
3 years ago
15

I’ll mark you brainlist SHOW WORK WRITE IN y=mx+b form

Mathematics
1 answer:
Dovator [93]3 years ago
7 0

Step-by-step explanation:

find slope first

38-8/-14-(-20) = 5

y = 5x + b

find y intercept by sub in any set value show as long as they are belongs together

8 = 5(-20) + b

8 = -100 + b

108 = b

y = 5x + 108

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The first term of a geometric sequence is 6, and the ratio (multiplier) is 0.5. What is the sum of the first 8 terms, rounded to
IRISSAK [1]
The sum of the first n terms of a geometric sequence is given by:

S_{n}=\frac{a_{1}(1-r^{n})}{1-2}

Using the known values:
S_{8}=\frac{6(1-0.5^{8})}{1-0.5}
S_{8}=\frac{6(1-0.00390625)}{0.5}
S_{8}=\frac{6(0.99609375)}{0.5}
S_{8}=\frac{5.9765625}{0.5}
S_{8}=11.953125

4 0
3 years ago
Which ordered pair is a solution of the equation?<br> y = -3x-4.
geniusboy [140]

Answer:

B. Only (-3,5)

Step-by-step explanation:

1. Plug in the x values from the answer choices  and see if it gives you the y-value in the answer choices.

A. y=-3(-2) - 4

= 6 - 4

y = 2

The ordered pair for answer A is (-2,4) where the y-value is 4. Well, when you plugged in -2 for x you got 2, not 4. So A can't be the right answer.

B. y=-3(-3) - 4

= 9- 4

y = 5

The y-value in this ordered pair (-3,5) is indeed 5, so this answer holds true.

Therefore, the answer is B because it is the only ordered pair that has the correct solution.

8 0
3 years ago
"In ABC, mBAC = 5x + 8, mABC = 6x + 22, and mBCA = 3x  25.
strojnjashka [21]
<span>In angle ABC, the measure of angle BAC = 5x + 8, </span>measure of angle ABC = 6x + 22, and measure of angle BCA = 3x  25. You know that the sum of the angles of a triangle is 180 degrees. And since the angles BAC, ABC and BCA are the corners of the triangle then just add them and equate to 180 degrees.

5x + 8 + 6x + 22 + 3x + 25 = 180
14x + 55 = 180
14x = 125
x = 8.93
5 0
3 years ago
Read 2 more answers
Delaney would like to make a 10 lb nut mixture that is 60% peanuts and and 40% almonds. She has several pounds of peanuts and se
vazorg [7]

Answer:

If there is "p" pounds of peanuts and "m" pounds of '20% peanuts and 80% almonds' mixture, then, we can get the following equations,

p + m = 10 -----------(1) and

4m/5 = 4 ------------(2)

whose solution is 5 lb peanuts and 5 lb mixture.

Step-by-step explanation:

In the mixture which Delaney wants to make there would be

\frac {10 \times 60}{100} lb

= 6 lb of peanuts

So, there will be (10 - 6) lb  

= 4 lb of almonds

If  Delaney has "p" pounds of peanuts and "m" pounds of the '20% peanuts and 80% almonds' mixture, then according to the question,

p + m = 10 -----------(1) and

4m/5 = 4 ------------(2)

So, from (2),

m = 5 --------------(3)

So, from (1) and (3) ,

p = (10 - 5) = 5  

7 0
3 years ago
The number of members f(x) in Joe's health club increased by 25% every year over a period of x years. The function below shows t
Arisa [49]

Answer:

initial value is 15

growth factor is 1.25

Step-by-step explanation:

we are given

The number of members f(x) in Joe's health club

increased by 25% every year over a period of x years

The function below shows the relationship between f(x) and x as

f(x)=15(1.25)^x

now, we can compare it with exponential function

f(x)=a(b)^x

where

a is the initial value

b is growth factor

we can compare and find 'a' and 'b'

a=15,b=1.25

So,

initial value is 15

growth factor is 1.25

we know that

x is time

so, it can never be negative

f(x) is number of chambers

so, f(x) can not be negative

now, we can draw graph

and we get as


5 0
3 years ago
Read 2 more answers
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