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jasenka [17]
3 years ago
12

Can 4x-2y=12x+2y=8 be solved by adding one of the original equations to the other

Mathematics
1 answer:
nydimaria [60]3 years ago
6 0

Answer:

No you can't add problems together, but you can use elimnation

Step-by-step explanation:

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It takes 24 hours to fill a large pool with two hoses, where the water in one hose flows four times as fast as the other hose.
ivolga24 [154]
4.8 h
Say the slow hose flows x
The fast hose flows 4x
5x = 24
x = 4.8
3 0
3 years ago
Can someone help me with this. Will Mark brainliest.
Lynna [10]

Answer:

pt B: (-1, -8)

Step-by-step explanation:

(x - 7)/2 = -4

x - 7 = -8

x = -1

(y-6)/2 = -7

y - 6 = -14

y = -8

3 0
2 years ago
What expressions are equivalent to (p-q)(x)
Talja [164]

Answer:

px-qx

Step-by-step explanation:

8 0
3 years ago
Metal A has a density of 12.7 g/cm3.
stira [4]

Using the given information, the density of metal B is 8.58 g/cm³

<h3>Calculating density </h3>

From the question, we are to determine the density of metal B

From the given information,

55 g of metal A is combined with metal B to create an alloy with mass 90 g

∴ Mass of metal B in the alloy = 90 g - 55 g = 35 g

Now, we will determine the volume of metal A in the alloy

Using the formula,

Density = Mass / Volume

∴ Volume = Mass / Density

Volume of metal A in the alloy = 55/12.7

Volume of metal A in the alloy = 4.33 cm³

Then, we will determine the volume of the alloy

Volume of the alloy = 90/10.7

Volume of the alloy = 8.41 cm³

∴ Volume of metal B in the alloy = 8.41 cm³- 4.33 cm³

Volume of metal B in the alloy = 4.08 cm³

Now, for the density of metal B

Density = mass / volume

Density of metal B = 35 / 4.08

Density of metal B = 8.58 g/cm³

Hence, the density of metal B is 8.58 g/cm³.

Learn more on Calculating density here: brainly.com/question/13986137

#SPJ1

5 0
1 year ago
Hey!!! please answer this asap it is an emergency!!!
ollegr [7]

Answer:

my bad yall, I seen the comments!! it's 12

Step-by-step explanation:

I'm so sorry!!

8 0
2 years ago
Read 2 more answers
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