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2 years ago

I need help fast please

Mathematics

1 answer:

Salsk061 [2.6K]2 years ago

8 0

Answer:

Step-by-step explanation:

Triangle PQR is scaled 3x the size of Triangle LMN. This means that if length LM is 3cm, just multiply it by 3 to get length PQ, 9cm

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Danielle wants to paint her daughter's room pink. Which plan will give her paint that is the least red?

NeTakaya

Step-by-step explanation:

Plan B:

2:5 = 0.4 red to 1 white

1:4 = 0.25 red to 1 white

Students might also scale up using part-to-whole-ratios and come up with 35 parts total and 14 parts red for Plan A and 35 parts total and 7 parts red for Plan B.

8 0

3 years ago

Which of the following is an extraneous solution of the square root of -3x-2=x+2

yarga [219]

Answer:

x=-6 is an extraneous solution

Step-by-step explanation:

we have

$\sqrt{-3x-2} =x+2$

squared both sides

$-3x-2=(x+2)^2$

$-3x-2=x^2+4x+4$

$x^2+7x+6=0$

solve the quadratic equation by graphing

The solution is x=-6 and x=-1

see the attached figure

<u><em>Verify each solution</em></u>

substitute the value of x in the original expression

For x=-6

$\sqrt{-3(-6)-2} =-6+2$

$\sqrt{16} =-4$

$4=-4$ ----> is not true

Is an extraneous solution

For x=-1

$\sqrt{-3(-1)-2} =-1+2$

$\sqrt{1} =1$

$1=1$ ----> is true

Is the solution

4 0

3 years ago

Monica bought a package of 434 party favors to give to the guests at her birthday party. She calculated that she could give 9 pa

nydimaria [60]

Answer:

so meh answer is

Step-by-step explanation:

4 0

3 years ago

Type the correct answer in each box. Use numerals instead of words.

Natali5045456 [20]

Given:

Consider the given function is $f(x)=-(x+1)(x-3)(x+2)$ .

To find:

The remaining zero and y-coordinate of y-intercept.

Solution:

We have,

$f(x)=-(x+1)(x-3)(x+2)$

For zeros, $f(x)=0$ .

$-(x+1)(x-3)(x+2)=0$

$(x+1)(x-3)(x+2)=0$

$(x+1)=0,(x-3)=0,(x+2)=0$

$x=-1,x=3,x=-2$

So, three zeros of given function are -1, 3 and -2.

Putting x=0 in the given function, we get

$f(0)=-(0+1)(0-3)(0+2)$

$f(0)=-(1)(-3)(2)$

$f(0)=-(-6)$

$f(0)=6$

So, the y-coordinate of y-intercept of the given function is 6. It means the y-intercept is at point (0,6).

Therefore, the zeros of the function $f(x)=-(x+1)(x-3)(x+2)$ are –1, 3, and -2 and the y-intercept of the function is located at (0,6).

7 0

3 years ago

kris and Travis both rounded a different number to the nearest tenth. the result was 53.6. Which of the following two numbers di

ludmilkaskok [199]

We need to find out which 2 numbers round to the nearest tenth is 53.6.

A. 53.542 The hundredths is 4 so the tenths does not round up. Rounded is 53. 5, which is not the answer

B. 52.591 The hundredths is 9 so the tenths round up. Rounded is 52.6, which is also not the answer

C. 53.615 The hundredths is 1 so the tenths does not round up. Rounded is 53.6, which is one of the answers

D. 53.545 The hundredths is 4 so the tenths does not round up. Rounded is 53.5, which is not the answer

E. 53.551 The hundredths is 5 so the tenths does round up. Rounded is 53.6, which is one of the answers

The two answers are C. 53.615 and E. 53.551 because both rounds to 53.6.

3 0

3 years ago

I need help fast please​

I need help fast please