3 years ago

Stephen collected 12 more coins than Sariyah. How many coins Sariyah collect?

Mathematics

2 answers:

Komok [63]3 years ago

6 0

How many coins do they have in all?

grigory [225]3 years ago

3 0

How many coins do they have? (Like both together)

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Describe how to use a tens fact to find the difference for 15-8

arlik [135]

When you use a tens fact you round to the nearest ten and 15-8=7. The nearest ten to seven is 10
Answer:10

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3 years ago

Train a is traveling at 30 mph faster than train b. If train a travels 350 miles in the same amount of time that train b travels

GalinKa [24]

Answer:

20 mph

Step-by-step explanation:

Let speed of Train a = Va mph

Let speed of Train b = Vb mph

Va = Vb + 30

Let time taken for Train a = Ta

Let time taken for Train b = Tb

time taken = distance travelled/speed

Ta = 350/Va = 350/(Vb+30)

Tb = 140/Vb

But they both travel in the same amount of time.

So, Ta = Tb

$\frac{350}{v_{b} + 30}=\frac{140}{v_{b}}$

Cross multiply

$350v_{b} = 140(v_{b} + 30)\\\\350v_{b} = 140v_{b} + 4200\\\\350v_{b} -140v_{b} = 4200\\\\210v_{b} = 4200$

Divide both sides by 210

$\frac{210v_{b} }{210} \frac{4200}{210} \\\\v_{b} = 20 mph$

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3 years ago

Laura wants to develop a model that shows how natural processes can suddenly change the Earths surface. which of the following c

Masteriza [31]

I really strongly think it’s A

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3 years ago

You used a total of 67.5 yards of cotton material to make costumes for a play. Each costume used 11.25 yards of cloth . How many

Damm [24]

67.5 divided by 11.25 equals 6 so you made 6 costumes

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4 years ago

Which represents the solution(s) of the graphed system of equations, y = x2 + x – 2 and y = 2x – 2

Debora [2.8K]

Answer:

x=1 and x=0

Step-by-step explanation:

We need to find the points at which the graphs y = x^2 + x – 2 and y = 2x – 2 intercept.

We know that:

x^2 + x – 2 = 2x – 2

x^2 - x = 0

Factorizing:

x(x-1) = 0

Therefore, the solution to the system of equation is x=1 and x=0.

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3 years ago