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3 years ago

The large rectangle below represents one whole.

Mathematics

1 answer:

dolphi86 [110]3 years ago

8 0

Answer: 44%

Step-by-step explanation:

There are 25 squares in the rectangle. This means that the percentage of each square is:

= 1/25 * 100

= 4%

There are 11 shaded squares so the percentage represented is:

= 11 * 4%

= 44%

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A baby gets 1 ml of vitamins each day. about how many weeks will a 50 ml bottle last?

anzhelika [568]

A baby gets 1 ml of vitamins every day. If you would like to know how many weeks will a 50 ml bottle last, you can calculate this using the following steps:

50 ml / 1 ml = 50 days
50 days / 7 days = 50 / 7 = 7.14 weeks

Result: A 50 ml bottle will last for about 7 weeks.

6 0

3 years ago

A 30 foot ladder is leaning against the side of a building and is positioned such that the base of the ladder is 21 feet from th

dem82 [27]

Answer:

21.42ft

Step-by-step explanation:

a²+b²=c² where "c" is the hypotenuse of a right triangle and "a" and "b" are the two other sides

now let's plug in the values

21²+b²=30²

b²= 30² - 21²

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3 years ago

Find the zeros of the function h(x)=x^2-5x-50 by factoring

lukranit [14]

$h(x)=x^2-5x-50=x^2-5x-25-25=x^2-25-5x-25\\\\=(x^2-25)-(5x+25)=(x^2-5^2)-5(x+5)\\\\=(x-5)\underline{(x+5)}-5\underline{(x+5)}=(x+5)(x-5-5)=(x+5)(x-10)\\\\Answer:Zeros\ are\ x=-5\ and\ x=10.$

5 0

4 years ago

If f(x)=5x-1 and g(x) 2x^2 +1, what is 6he value of (f×g)(-3)

saul85 [17]

Answer: D

Step-by-step explanation:

$f(3)=5(-3)-1=-16\\\\\\g(3)=2(-3)^{2}+1=19\\\\(f\times g)(3)=-16 \times 19=\boxed{-304}$

7 0

2 years ago

A student concluded that the inequality −3+2y≤4x is equivalent to the inequality y≥2x+32, as shown below. Describe and correct t

timofeeve [1]

Answer:

$-3 +2y \leq 4x$

$2y \leq 4x+3$

$y \leq 2x + \frac{3}{2}$

And that's different from the claim of the student that:

$y \geq 2x +\frac{3}{2}$

The error of the student is that he/she changes the sign of the inequality from $\leq$ to $\geq$ and that's not possible since we don't multiply both sides of the equation by -1

Step-by-step explanation:

For this case we have the following inequality:

$-3 +2y \leq 4x$

We want to rewrite the last expression with y in the left and x in the right so we can begin adding 3 in both sides of the inequality and we got:

$2y \leq 4x+3$

Now we can divide both sides of the inequality by 2 and we got:

$y \leq 2x + \frac{3}{2}$

And that's different from the claim of the student that:

$y \geq 2x +\frac{3}{2}$

The error of the student is that he/she changes the sign of the inequality from $\leq$ to $\geq$ and that's not possible since we don't multiply both sides of the equation by -1

5 0

3 years ago