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777dan777 [17]
3 years ago
13

Use the elimination method to solve the system of equations.

Mathematics
2 answers:
AnnZ [28]3 years ago
6 0
The answer is A.
x= 3/5 or 0.6 and y= 2
Alborosie3 years ago
5 0
<span>   5x + 2y = 7 
+
   −5x + 4y = 5 
____________

6y = 12
y = 12/6
y = 2

</span>5x + 2y = 7 
5x + 2*2 = 7
5x + 4 = 7
5x = 7 - 4
5x = 3
x = 3/5

<span>A. ( 3/5, 2) </span>
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A bed is 2400 a discount of 25% was given on the
Brrunno [24]

Answer:

800

Step-by-step explanation:

Given: The selling price of bed is 2400.

          Discount offered is 25%

Lets assume the cost of bed be "x"

Discount offered on the cost price of bed= \frac{25}{100} \times x= 0.25x

∴ Discount offered on the cost price of bed= 0.25x

We know the selling price of bed after discount provided.

Finding the cost price of the bed.

⇒ x-0.25x= 2400

⇒ 0.75x= 2400

cross multiplying both side.

∴ x= \frac{2400}{0.75} = 3200

∴ Cost price of the bed is 3200.

We know selling price of the bed is 2400.

Now, finding the saving.

Saving on the price of bed= Cost price- selling price

Saving= 3200-2400= 800

Hence, saving on the purchase of the bed is 800.

7 0
3 years ago
Please answersssss 15 pointssss
Anettt [7]
The answer to this problem is B
7 0
3 years ago
Read 2 more answers
Which equation is rewritten in vertex form?
Zinaida [17]
(x + 3)^2 + (x + 4)^2 
= x^2 + 6x + 9 + x^2 + 8x + 16
= 2x^2 + 14x + 25
= 2(x^2 + 7x) + 25
= 2[(x + 7/2)^2  - 49/4] + 25
= 2(x + 7/2)^2 - 98/4 + 25
= 2(x + 7/2)^2 + 1/2


Its B

7 0
3 years ago
Use the grouping method to factor x^3+x^2+5x+5
Marianna [84]

Answer: MARK BRAINLIEST

23x

Step-by-step explanation:

x^3+x^2+5x+5 = 23x

6 0
3 years ago
Read 2 more answers
Find the volume of a cylinder with a diameter of 6 inches and a height that is three times the radius. Use pi on your calculator
Virty [35]
ANSWER
V=254.47in^3

EXPLANATION

The volume of a cylinder is given by the formula:

V=\pi \: {r}^{2} h

The given cylinder has diameter 6. This means that, the radius is

r = \frac{6}{2}

r = 3cm

The is height is

h = 3r

h = 3(3) = 9cm

We substitute the values into the formula to obtain;

V=\pi \: {3}^{2} \times 9

V=81\pi

V=254.46900494

The volume is 254.47in^3 to the nearest hundredth
7 0
3 years ago
Read 2 more answers
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