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4 years ago

PLEASE HELP! I know the top part I just need the bottom!

Mathematics

1 answer:

Zolol [24]4 years ago

7 0

slope = (y2-y1)/(x2-x1)

= (70-52)/(8-1)

= 18/7

=2.6

point slope form

y-y1 = m(x-x1)

y-52 = 2.6(x-1)

distribute

y-52 = 2.6x-2.6

add 52 to each side

y = 2.6x+49.4

y = 2.6x +49

the initial temperature is 49.4 or about 49

and it increases about 2.6 degrees each week

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15 POINTS - What is the value of the expression when y=2? See image.

artcher [175]

Answer:

Step-by-step explanation:

The given expression is;

$\frac{2-y}{4+y}+\frac{3(y+2)}{y}$

When y=2, the expression becomes;

$\frac{2-2}{4+2}+\frac{3(2+2)}{2}$

This simplifies to;

$\frac{0}{6}+\frac{3(4)}{2}$

$0+3(2)$

Multiply to get;

$0+6=6$

The value of the expression when y=2 is 6.

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3 years ago

A fourth-grade class needs 5 leaves each day to feed its 2 caterpillars. How many leaves would the students need each day for 12

djverab [1.8K]

Answer:

30 leaves

Step-by-step explanation:

if it takes 5 leaves to feed 2 caterpillars, and there are 6 times as many caterpillars(2*6) then just multiply the number of leaves by 6.

Which would equal 30 leaves

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2 years ago

What is the best approximation of the length of segment QS? (Note: cos 80° = 0.17)

matrenka [14]

Answer: $QS=11.8cm$

Step-by-step explanation:

1. You have the following information:

- The lenght of $RS$ is 2 centimeters.

- The angle m∠S=80°.

- Cos80°=0.17

2. Therefore, you can calculate the lenght of the segment $QS$ as following:

$cos80=\frac{adjacent}{hypotenuse}$

$adjacent=2cm\\hypotenuse=QS\\cos80=0.17$

3. Substitute values and solve for $QS$ :

$0.17=\frac{2cm}{QS}\\QS=\frac{2cm}{0.17} \\QS=11.76cm$

4. To the nearest tenth:

$QS=11.8cm$

6 0

4 years ago

answer as a mixed number if possible. A bowl of cereal had 3 3/6 grams of sugar in it. If Victor ate 2 bowl8a week, how many gra

GrogVix [38]

<em>7 grams of sugar</em>

<h2>Explanation:</h2>

________________________________________

I'll assume your answer is as follows:

<em>A bowl of cereal had 3 3/6 grams of sugar in it. If Victor ate 2 bowl a week, how many grams of sugar would he have eaten?</em>

________________________________________

If so, then we know that:

A bowl of cereal had 3 3/6 grams of sugar in it.

Victor ate 2 bowl a week

In other words, the total of sugar he ate can be calculated as:

$3\frac{3}{6}\times2 \\ \\ Converting \ mixed \ fraction \ into \ improper \ fraction: \\ \\ =(3+\frac{3}{6})\times2 \\ \\ =(\frac{3(6)+3}{6})\times 2 \\ \\ =(\frac{21}{6})\times 2 \\ \\ =(\frac{7}{2})\times 2 \\ \\ =7$

So <em>he'd have eaten 7 grams of sugar</em>

<h2>Learn more:</h2>

Mixed numbers: brainly.com/question/383603

#LearnWithBrainly

7 0

4 years ago

in 2013 the population of detroit was 743204 the population of the city of detroit in the year 1970 was 688,701 greater than in

Virty [35]

Answer:

The population of Detroit in 1970 was 1,431,905 people.

Step-by-step explanation:

Take the number 743,204 and add the number 688,701.

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3 years ago