2 years ago

4x+5y=13 8x+7y=11 find solution of system of equation

Mathematics

1 answer:

Pavel [41]2 years ago

3 0

Point Form:

(−3, 5)

Equation Form:

x = −3,y = 5

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Nicole has a 10 m ball of string. She cuts 6 lengths of 40 cm each, How much string does she use?

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answer is 760 m left

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3 years ago

A spring has natural length 24 cm. Compare the work W1 done in stretching the spring from 24 cm to 34 cm with the work W2 done i

Scilla [17]

Answer:

From the analysis W1=W2.

they are directly related

Step-by-step explanation:

the work-done in stretching a spring can be expressed as

$W=\frac{1}{2}kx^2$

where k= spring constant

x= change on length of spring

Hence for W1

Given data

x= 34-24= 10 cm

solving in terms of k we have

$W=\frac{1}{2}k*10^2\\\W=\frac{1}{2}k*100\\\W=50k$

Hence for W2

Given data

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solving in terms of k we have

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3 years ago

I WILL GIVE BRAINIEST PLS HELP

Art [367]

Alternate angles - happy to help!

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1 year ago

ANSWER ASAP WILL GIVE BRAINLIEST

Gnom [1K]

I think it’s the first one because if you look at the shape it lines up to make the same shape Srry if this is wrong

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2 years ago

2.8% of 45 is what number? <br><br>I need the percent equation, the proportion, and the solution

Talja [164]

The percent equation is
n=2.8%×45 or n=0.028×45. where n is the unknown number.
the proportion would be
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3 years ago