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tensa zangetsu [6.8K]
3 years ago
11

What’s the new value for x ?! Please HELP !!!!!!! Will mark BRIANLIEST !!!!!!!!!!!!!!!

Mathematics
2 answers:
masha68 [24]3 years ago
7 0

Answer:

x=59

Step-by-step explanation:

87+x+34=180 because its a straight line

121+x=180

x=59

frez [133]3 years ago
6 0

Answer:

59

Step-by-step explanation:

all triangles add up to 180 degrees.

add 87+34=121

do 180-121=59 because you want to find the value of x

to check your work add up all of the degrees together and when you get 180 you will be correct!

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Two cyclists, 80 miles apart, start riding towards each other at the same time. One cycles three times as fast as the other. If
miv72 [106K]

Answer:

The speed of the faster cyclist is 15 miles per hour

Step-by-step explanation:

Let the speed of the slower cyclist be x miles per hour

The speed of the faster is 3 times this

Mathematically, we have this as 3 * x miles per hour = 3x miles per hour

Now;

distance = speed * time

In 4 hours, the distance covered by the slower will be;

x * 4 = 4x miles

The faster;

3x * 4 = 12x miles

Since they are riding opposite each other, they would have covered a total distance of 80 miles when they meet

Thus, we have that;

12x + 4x = 80

16x = 80

x = 80/16

x = 5

The speed of the faster is;

3x miles per hour

Substitute the value of x here

That will be;

3 * 5 = 15 miles per hour

8 0
3 years ago
Plz help i will mark brainlest if correct
velikii [3]

We should get extra points for decoding the question.  Is that computer generated?

It's easier for us if you type it in using math symbols, with lots of parentheses for clarity, or just post a photo.

If

(-3)^{-5} = \dfrac{1}{x}

what is the value of x?

That's straightforward:

x = \dfrac{1} {(-3)^{-5}} = (-3)^5 = -243

Answer: -243

5 0
4 years ago
Read 2 more answers
Which is an exponential growth function?
Nataliya [291]

Answer:

f(x)=120,000(1.055)^{x}

Step-by-step explanation:

In this problem we have a exponential function of the form

f(x)=a(b)^{x}

where

f(x) a home's value

x the number of years

a is the initial value

b is the base

b=(1+r)

r is the rate of grown

we have

a=$120,000

r=5.5%=5.5/100=0.055

b=1+0.055=1.055

substitute

f(x)=120,000(1.055)^{x}

6 0
3 years ago
What percent of 20 is 15
Vesnalui [34]
To solve for this, we need to set up fractional proportions.
We have x% out of 100%, x being what we're looking for and 100 being the total maximum percent.
We have 15 out of 20, being one of our fractions.
Our fractions are:
x/100 = 15/20.
To solve for this, we need to cross multiply the denominator of one fraction by the numerator of the other fraction.
Multiply x and 20, and then 100 and 15.
You should end up with:
20x = 1500.
Divide both sides by 20 to solve for x.
20x/20 = x.
1500/20 = 75.
x = 75.
Your final and absolute answer is :
15 is 75% of 20.
I hope this helps!
4 0
4 years ago
(20 Points) Which test point holds true for 2/5x-1/5y≥0
sineoko [7]

I think is C but I'm not 100% sure

6 0
3 years ago
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