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Mars2501 [29]
2 years ago
8

So if the following system of equations by substitution.

Mathematics
2 answers:
sp2606 [1]2 years ago
7 0

Step-by-step explanation:

Option B is correct.

I'm sure (-3 , 4)

Juli2301 [7.4K]2 years ago
4 0

Answer:

x=-3, y=4. (-3, 4). B)

Step-by-step explanation:

7x+2y=-13

-3x-8y=-23

-------------------

4(7x+2y)=4(-13)

-3x-8y=-23

---------------------

28x+8y=-52

-3x-8y=-23

-------------------

25x=-75

x=-75/25

x=-3

7(-3)+2y=-13

-21+2y=-13

2y=-13-(-21)

2y=-13+21

2y=8

y=8/2

y=4

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14 kg of apples cost $154.how much would 16kg cost
ankoles [38]
We can set up a proportion, and let x be the amount 16kg would cost: 14/154=16/x. We simplify 14/154 = 1/11. Next, we cross-multiply to get (1)(x)=(16)(11), so x=176. Therefore, 16kg of apples cost $176.
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4 0
2 years ago
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Dawn simplified a power correctly and came up with a value of 64.
abruzzese [7]

Answer:

Hello fellow brainlian, I am pretty sure the answer is A)

Step-by-step explanation:

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3 years ago
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Rewrite 4.4.6.4.4.6 using exponents<br>​
kondaur [170]

Answer:

4^{4}×6^{2}

Step-by-step explanation:

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6 0
3 years ago
There are 24 red roses and 36 white roses in the bouquet. what is the ratio of red roses to white roses
otez555 [7]

Answer:

the required ratio is :

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6 0
3 years ago
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Aysha has 40 cubes in a bag.
marissa [1.9K]

Given:

Total number of cubes = 40

Red cubes = 18

Blue cubes = 13

Yellow cubes = 9

Aysha adds some more red cubes into the bag.

The probability now that she will take a red cube is 0.5.

To find:

The probability that she will take a yellow cube.

Solution:

Let Aysha adds x red cubes into the bag. Then,

Number of total cubes = 40+x

Number of red cubes = 18+x

Probability of getting a red cube is:

P(Red)=\dfrac{18+x}{40+x}

The probability now that she will take a red cube is 0.5. So,

\dfrac{18+x}{40+x}=0.5

18+x=0.5(40+x)

18+x=20+0.5x

x-0.5x=20-18

0.5x=2

Divide both sides by 0.5.

x=\dfrac{2}{0.5}

x=4

It means Aysha adds 4 more red cubes into the bag.

Now, the total number of cubes int he bag is:

40+4=44

Probability of getting a yellow cube is:

P(Yellow)=\dfrac{\text{Number of yellow cubes}}{\text{Total number of cubes}}

P(Yellow)=\dfrac{9}{44}

Therefore, the required probability is P(Yellow)=\dfrac{9}{44}.

8 0
2 years ago
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