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professor190 [17]

3 years ago

13

1 Joseph weighs 100 pounds and his sister weighs 100 pounds. How much do they weigh together? 15 a. 4 200 pounds 4 100 15 15 pou

nds b. d. 2 200 pounds 20 5 200 pounds 15 Please select the best answer from the choices provided O A OB Ос D

2 answers:

charle [14.2K]3 years ago

7 0

Your answer is going to be a

Montano1993 [528]3 years ago

4 0

A because 100+100 is 200

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(I really do need help)

frozen [14]

Answer:

90 i think

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Select three ratios that are equivalent to <br> 4:3 <br> Choose 3 answers:

postnew [5]

Ratios equivalent to 4:3 would be 8:6 16:12 and 24:18

6 0

4 years ago

Read 2 more answers

Solve for x. 25 - 3x = -5(1 - x) - 2x

grandymaker [24]

Answer:

$x = 5$

Step-by-step explanation:

25 - 3x = -5(1 - x) - 2x

<u></u>

<u>We have to first get rid of the parenthesis:</u>

$-5 * 1$ ==> -5

$-5 * -x$ ==> 5x

<u>So now you should have:</u>

25 - 3x = -5 + 5x - 2x

<u>Combine like terms:</u>

25 - 3x = -5 + 5x - 2x

25 - 3x = -5 + 3x

<u>Add 3x to both sides:</u>

25 - 3x = -5 + 3x

+ 3x = + 3x

<u>And you should have:</u>

25 = -5 + 6x

<u></u>

<u>Add 5 to both sides:</u>

25 = -5 + 6x

+5 = +5

30 = 6x

<u>Divide 6 to both sides:</u>

$\frac{30}{6}$ = $\frac{6x}{6}$

5 = x

3 0

3 years ago

Read 2 more answers

Temperature: The temperature in Coldspot is -7° and is increasing 2.5° per hour. The temperature in Frostberg is 19° and is decr

Kitty [74]

Answer:

It will be 4 hours until the temperatures are the same

Step-by-step explanation:

Let $T_{c}$ represent the temperature in Coldspot in $x$ hours and

$T_{f}$ represent the temperature in Frostberg in $x$ hours.

From the question,

The temperature in Coldspot is -7° and is increasing 2.5° per hour, then we can write that

$T_{c} = -7 + 2.5x$

Also, from the question,

The temperature in Frostberg is 19° and is decreasing 4° per hour, then we can write that

$T_{f} = 19 - 4x$

To determine how long it will be until the temperatures are the same, that is when $T_{c}$ will be equal to $T_{f}$ , we will equate the two equations and determine $x$ .

$x$ will give the number of hours until the temperatures are the same.

$T_{c} = T_{f}$

$-7 + 2.5x = 19 - 4x$

Then,

$4x + 2.5x = 19 + 7$

$6.5x = 26$

$x = \frac{26}{6.5}$

∴ $x = 4$

Hence, it will be 4 hours until the temperatures are the same.

3 0

3 years ago

A classroom of children has 18 boys and 19 girls in which five students are chosen to do presentations. in how many ways can the

il63 [147K]

They can be chosen in 12,444 ways.

There are three different scenarios that have more boys being chosen than girls:
5 boys and 0 girls
4 boys and 1 girl
3 boys and 2 girls

We will set up combinations for all 3 of these scenarios:
$(_{18}C_5\times{_{19}C_0)+(_{18}C_4\times_{19}C_1)+(_{18}C_3\times_{19}C_2)$
$\frac{18!}{5!13!}\times \frac{19!}{0!19!}+\frac{18!}{4!14!}\times \frac{19!}{1!18!}+\frac{18!}{3!15!}\times \frac{19!}{2!17!}
\\
\\=8568+3060+816=12444$

7 0

3 years ago