Ask question

Ask question

All categories

2 years ago

10

There are 35 boys in the sixth grade. The number of girls in the sixth grade is 42. Lonnie says that means the ratio of the numb

er of boys in the sixth grade to the number of girls in the sixth grade is 5: 7. Is Lonnie correct?

1 answer:

balandron [24]2 years ago

8 0

Lonnie is incorrect. this is because 7 x 7 equals 49 and not 42.

You might be interested in

Three lines of crops in a garden form a triangular shape. Strawberries are planted in a 10 ft line and green beans are planted i

Marat540 [252]

Answer:

$p = 19.18$

Step-by-step explanation:

This question is illustrated using the attachment and will be solved using cosine formula

$a^2 = b^2 + c^2 - 2bcCosA$

<em>Let the strawberry side be s, the Green beans be b and the pumpkins be p.</em>

<em />

The cosine formula in this case is:

$g^2 = s^2 + p^2 - 2spCosG$

Where

$s = 10$

$g = 18$

The equation becomes

$18^2 = 10^2 + p^2 - 2 * 10 * p * Cos\ 68$

$324 = 100 + p^2 - 20 * p * 0.375$

$324 = 100 + p^2 - 7.5p$

Collect Like Terms

$p^2 - 7.5p + 100 - 324 = 0$

$p^2 - 7.5p - 224 = 0$

Using quadratic formula:

$p = \frac{-b\±\sqrt{b^2-4ac}}{2a}$

Where

$a = 1$

$b = -7.5$

$c = -224$

$p = \frac{-(-7.5)\±\sqrt{(-7.5)^2-4*1*-224}}{2*1}$

$p = \frac{7.5\±\sqrt{56.25+896}}{2}$

$p = \frac{7.5\±\sqrt{952.25}}{2}$

$p = \frac{7.5\± 30.86}{2}$

$p = \frac{7.5 + 30.86}{2}$ or $p = \frac{7.5 - 30.86}{2}$

$p = \frac{38.36}{2}$ or $p = \frac{-23.36}{2}$

$p = 19.18$ or $p = -11.68$

But length can not be negative.

So:

$p = 19.18$

6 0

2 years ago

What do I have to do

hichkok12 [17]

Answer:

+15

-721

0

+462

-1200

The positives are because it said 'above sea level', the negatives because it said 'below sea level' and zero because it said 'sea level'.

3 0

2 years ago

Rewrite the following equation in exponential form.<br> log 49(7) = 1/2

asambeis [7]

It would be log7squared(7)

4 0

3 years ago

99is 35percent of????????????????????

Arada [10]

Answer is 283
283 x 0.35 = 99.1

3 0

3 years ago

paul can be choose to be paid 50 dollars for a job or he can be paid 12:50 per hour. under what circumstances should he choose t

umka21 [38]

12.50x4=50. If he works more than 4 hours he will earn more money from hourly.

3 0

3 years ago