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adoni [48]
2 years ago
8

X= 5y + 7 2x + 4y = 0 Solve for substitution

Mathematics
2 answers:
algol132 years ago
8 0

Answer:

x=2 and y= -1

Step-by-step explanation:

substitute x value in equation 2

2(5y+7)+4y=0

10y+14+4y=0

14y = -14

y= -1

here,

x= 5(-1)+7

x= -5+7

x=2

anygoal [31]2 years ago
3 0
Point slope form: (2,-1)
Equation form: x=2 , y=-1


Solve for the first variable in one of the equations then substitute the result into the other equation.
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Find the length of B to the nearest tenth using the Pythagorean theorem.​
fgiga [73]
The answer is 11.2

The Pythagorean Theorem says
a^2+b^2=c^2

From the picture, we know one side, and the hypotenuse.

10^2+b^2=15^2
100+b^2=225
b^2=225
Sqrtb^2=sqrt225
b=11.18

Rounded to the nearest tenth it is 11.2
4 0
3 years ago
Please answer someone
Korolek [52]

Answer:

answer C

Step-by-step explanation:

hello

set A is 10^x

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so set A is an exponential function and the values increase at a faster rate than set B

hope this helps

4 0
3 years ago
Write a linear equation in point slope form that passes through the point (-2,5) with a slope or 1/2
trasher [3.6K]

Answer:

y-5=\frac{1}{2}(x+2)

Step-by-step explanation:

Point Slope is:

y-y_1=m(x-x_1)

We are given the point (-2, 5) and a slope of 1/2.

y-y_1=m(x-x_1)\rightarrow\boxed{y-5=\frac{1}{2}(x+2)}

Hope this helps.

4 0
2 years ago
Can someone please help me with these questions!
8_murik_8 [283]

1. Buddy is 1 out of 11 students in the classroom who are spreading Christmas Cheer. What percentage of the class is he?

He is 9% of the class that is spreading Christmas cheer.

2. Santa's sleigh has a Clausometer. The highest measure is 100%. If the Clausometer measured at 45. What would this number be represented as a decimal?

If the clausometer measured at 45 then this number as a decimal will be represented as 0.45.

3. The Jack-in-the-box toys had to be tested! The toys worked 0.985 of the time! What percentage of time did they work?

They worked 98.5% of the time

4. The guys handing out advertisement flyers have handed out 4/5 of their total flyers. What percentage of flyers has been handed out?

80% of flyers have been handed out.

5. When the lights go out in the store at night, there is a 15% off sign hanging up by the makeup counter. What is this number as a decimal and a fraction in simplest form?

This number as a decimal and a fraction in simplest form is 3/20 and 0.15.

7 0
3 years ago
Read 2 more answers
Discount tickets to a basketball tournament sell for $4.00 each. Sam spent $60.00 on discount tickets, $37.50 less than if he ha
nignag [31]

Answer: the regular price is $6.5 each.

Step-by-step explanation:

Let x represent the regular price of a ticket to a basketball tournament.

Discount tickets to a basketball tournament sell for $4.00 each. Sam spent $60.00 on discount tickets. This means that the number of tickets that Sam bought is

60/4 = 15 tickets

The cost of 15 tickets at the regular price is 15x

Since the amount he paid is $37.5 lesser than what he would have paid if he bought the tickets at the regular price, then

15x = 60 + 37.5 = 97.5

x = 97.5/15

x = 6.5

5 0
3 years ago
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