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2 years ago

I NEED HELP ASAP PLEASE!!!!!

Mathematics

2 answers:

Bess [88]2 years ago

8 0

A

plug in x = -1 to both sides and you get 1 as the answer for both sides.

djverab [1.8K]2 years ago

7 0

Answer:

Step-by-step explanation:

If the graphs intersect at point (-1,1) we can substitute the equations to determine if the solutions will yield the point of intersection. Lets look at each equation and solve for x and y:

$3\cdot(x)+4=-2\cdot(x)-1$

$x=-1$

Substitute it into one of the equations:

$y=3\cdot(-1)+4=1$

Therefore the equations in choice at intersect at point (-1,1)

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Rotate triangle ABC 90° clockwise around the origin given the vertices A(1,3)B(-1,4)C(2,5) what are the new vertices for triangl

fgiga [73]

Answer:

$A' = (3,-1)$

$B' = (4,1)$

$C' = (5,-2)$

Step-by-step explanation:

Given

$A = (1,3)$

$B = (-1,4)$

$C = (2,5)$

Rotation: 90 degrees clockwise

Required

Determine A'B'C'

When a point $P (x,y)$ is rotated 90 degrees in the clockwise direction, the new coordinates is: $P' (y, -x).$

So, we have:

$A = (1,3)$

$B = (-1,4)$

$C = (2,5)$

Becomes

$A' = (3,-1)$

$B' = (4,1)$

$C' = (5,-2)$

3 0

2 years ago

Question 1 of 10

Lorico [155]

It’s should be -10 answer

8 0

2 years ago

What is the answer to 10 - 5 2/3 I suck at fractions

Free_Kalibri [48]

4 1/3

Okay, I know fractions are scary, but we can do this alright?

First, you see the whole number on the side? Get that first.

10- 5 = 5

now we have 5 left and a scary fraction. Don't panic, let's do this. We know 1 is 3/3. 1 can be anything as long as the number on top and the number at the bottom are the same then it would be one.

So 3/3 is one then we can subtract:

3/3 -2/3 .

We subtract the top number and leave the one at the bottom the same.

3-2 = 1

Then we have 1/3.

As you took one away from the 5, it becomes a 4 and you put back the left over, 1/3.

Then you answer will be :

4 1/3

8 0

2 years ago

During two years, the population of birds of an island became 7 times more than before. If the first year increase in the popula

nordsb [41]

Answer:

The percent increase of the second year is 400%.

Step-by-step explanation:

Consider the provided information.

Let the population of birds was x.

After 2 years the population becomes 7 times more than before.

Therefore, after 2 years population is 7x.

In first year increase in the population was 40%.

Population after 1st year = x + 40% of x

Population after 1st year = x + 0.40x

Population after 1st year = 1.4x

The population increase from 1st year to 2nd year is: 7x-1.4x=5.6x

Thus the percentage increase is:

$\% increase=\frac{5.6x}{1.4x}\times100=400\%$

Hence, in second year the population of birds increase by 400%.

6 0

2 years ago

The football team has a total of 50 jerseys.There are 15 medium-sized jerseys. What percent of the jerseys are medium-sized je

ladessa [460]

All you have to do is divide the medium sized jerseys by the total number of jerseys and multiply by 100.

15/50*100=30%

8 0

2 years ago

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