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3 years ago

Please help me ASAP!

Mathematics

1 answer:

Julli [10]3 years ago

6 0

Hey. So for this problem, you're going to have to rewrite it in y=mx+b form.

Equation 1: x-4y=-2

Subtract x from both sides: -4y=-x-2

Divide by -4 to get y by itself: y=1/4x+1/2

Equation 2: -2x-y=-5

Add 2x to both sides: -y=2x-5

Divide by -1 to get y by itself: y=-2x+5

I'm kind of blind so I believe that matches up with graph C. Solution should be (2,1)

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3-Read Activity

tino4ka555 [31]

Answer:

<h2>Bibi ate 6.3 pounds of food, approximately.</h2><h2>Rexy ate 5.7 pounds of food, approximately.</h2>

Step-by-step explanation:

1. What is this situation about?

The situation described is about the amount of food those dogs eat, and its relation with their weights.

2. What are the quantities in this situation?

The quantities are aboth the weight of each dog, and the number of pounds of dog food.

3. What mathematical questions could we ask?

We could ask the pounds of food each dog eats, in proportion with their weights.

4. Answer the question.

To answer that question, we just need to form a proportion.

$\frac{8}{10.5}=\frac{12-x}{x}$

Where $12-x$ is the total pounts Rexy ate, and $x$ is the total pounts Bibi ate.

$8x=126-10.5x\\8x+10.5x=116\\18.5x=116\\x=\frac{116}{18.5} \approx 6.3$

Therefore, Bibi ate 6.3 pounds of food, approximately.

Then, $12-x = 12-6.3 = 5.7$

Which means, Rexy ate 5.7 pounds of food, approximately.

7 0

3 years ago

How do you solve this

yawa3891 [41]

Answer:

$(a).\:\:\int _1^{-1}3f\left(x\right)dx\:=-12$ is the final answer.

Step-by-step explanation:

See the attachment below.

Best Regards!

3 0

4 years ago

Read 2 more answers

Calculate the perimeter of the figure

larisa86 [58]

Perimeter is distance all around the side of the figure, so you would do:

8 + 7 + 19 + 3 + y + x

Plug in y and x that you solved before: 8 + 7 + 19 + 3 + 11 + 4

Add them!: 52

The perimeter is 52 meters.

5 0

4 years ago

A restaurant offers three specials. a total of 40 of special a is order, 60 of special b, and 20 of special

Lina20 [59]

I think 18 but i dont know

8 0

3 years ago

The first 4 terms of a 10-term geometric series are listed below. Which expression represents the sum

Stella [2.4K]

Given:

First 10 term of a geometric series are:

$\dfrac{16}{25}+\dfrac{8}{5}+4+10+...+a_10$

To find:

The expression that represents the sum of the series.

Solution:

The first term of the given geometric series is:

$a_1=\dfrac{16}{25}$

The common ratio of the given geometric series is:

$r=\dfrac{a_2}{a_1}$

$r=\dfrac{\dfrac{8}{5}}{\dfrac{16}{25}}$

$r=\dfrac{8}{5}\times \dfrac{25}{16}$

$r=\dfrac{5}{2}$

The sum of first n terms of a geometric sequence is:

$S_n=\dfrac{a_1(1-r^n}{1-r}$

Where r is the common ratio.

Putting $a_1=\dfrac{16}{25},r=\dfrac{5}{2},n=10$ in the above formula, we get

$S_{10}=\dfrac{16}{25}\left(\dfrac{(1-(\dfrac{5}{2})^{10}}{1-\dfrac{5}{2}}\right)$

Therefore, the correct option is C, i.e., $\dfrac{16}{25}\left(\dfrac{(1-(\dfrac{5}{2})^{10}}{1-\dfrac{5}{2}}\right)$ .

5 0

3 years ago