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3 years ago

If David had $10. He shared $3 with Steve, $6 with Anderson. How much money does he have left?

Mathematics

1 answer:

elena-s [515]3 years ago

5 0

The answer would be 1$. 10-3 (to steve) =7

7-6 (to anderson) = 1

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Factor 70q+60. Write your answer as a product with a whole number greater than 1.

faltersainse [42]

Answer:

10(7q + 6)

Step-by-step explanation:

Find the GCF of 70 and 60: 10
Divide each number by 10 (steps shown below)
70q ÷ 10 = 7q
60 ÷ 10 = 6
Re-write the expression with 10: 10(7q + 6)

I hope this helps!

7 0

3 years ago

PLZ HELP ME IM DUMB BC ITS FLIPPIN 12 IN THE MORNING> In a class where 65% of the students are girls, how boys are there if t

Jlenok [28]

Answer:

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Step-by-step explanation:

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3 years ago

a wire of length 200 cm is cut into two parts and each part is bent to form a square.If the area of the larger square is 9 times

diamong [38]

Answer:

The perimeter of the larger square is $150cm.$

Step-by-step explanation:

First of all, let one part of it be " $x$ "

and the other part of it " $200-x$ "

Now to solve this :

The area of the square = $L^2$

The area of one part of the square = $x^2$

The area of the other part of the square = $(200-x)^2$

$9x^2= (200-x)^2\\9x^2=40000-400x+x^2$

Now, add, $-4x^2$ to both the sides :

$9x^2-9x^2=40000-400x+x^2-9x^2\\-1(8x^2+400x-40000)=0$

Now, take out the "8" which is common :

$-8(x^2+50x-5000)=0$

Now, divide it by $-8$ :

$x^2+100x-50x-5000=0\\x(x+100)-50(x+100)=0\\(x+100)(x-50)=0\\$

$x=-100$ or $50$

So, now we know that :

One of the part is = $50cm$

And the other part is = $150cm$

Thus the perimeter of the larger square is = $150cm$

3 0

3 years ago

If you travel 4 miles around a circle with a radius of 1 mile, what is the central angle (q)?

mixer [17]

Answer:

229.18 degrees

Step-by-step explanation:

The circumference of a circle with radius r is 2×pi×r.

So if it has a radius of 1 mile, then the circumference is 2×pi×1=2pi miles.

So if we travel 4 miles, then the percentage of this circle we traveled is 4/(2pi)=63.66% approximately.

There are 360 degrees in a circle and we want to how much of that rotation belongs to traveling 4 miles of the circumference of a circle that measures 2pi miles. So 63.66%×360 degrees =229.18 degrees.

4 0

3 years ago

3. The parents of a newborn girl want to invest $1000 in some kind of saving plan that their child could

andrew11 [14]

Answer:

A. 1000x75t=i

B. 1000(1+5%/n)^t

Step-by-step explanation:

i=prt interest principle rate time

a=p(1+r/n)^t amount principle rate number of times interest is compound time

Hope this helps.

5 0

3 years ago