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2 years ago

What do solar cells convert into electricity? wind water sunlight plants

Mathematics

1 answer:

Yakvenalex [24]2 years ago

3 0

Answer:

sunlight

Step-by-step explanation:

solar panels take in the sunlight and stores the energy from the sunlight into what is called a "battery bank."

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Rita is planting saplings along her garden fence. When she started, she had x packages of saplings with 5 saplings per package.

Arturiano [62]

Answer:

A. When Rita started, she had 7 packages of saplings.

B. If we represent x (number of packages of saplings) on a number line graph, it will start on number 4 (number of packages Rita still has) then moves to the right to number 7, that is the number of packages when Rita started to plant.

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Number of packages Rita started = x

Number of saplings per package = 5

Number of saplings planted by Rita = 15

Number of saplings left = 20

2. How many packages of saplings did she start with?

Number of packages Rita started = (Number of saplings planted by Rita + Number of saplings left)/Number of saplings per package

Replacing with the real values:

x = (15 + 20)/5

x = 35/5 = 7

When Rita started, she had 7 packages of saplings.

3. What would the solution look like on a number line graph?

If we represent x (number of packages of saplings) on a number line graph, it will start on number 4 (number of packages Rita still has) then moves to the right to number 7, that is the number of packages when Rita started to plant.

5 0

1 year ago

Daisy measured the heights of 20 plants.

sergiy2304 [10]

Answer:

30.5 cm

Step-by-step explanation:

Refer to attached

Height of plants (h) >> Frequency >> Midpoint >> Frequency x midpoint
0 <h < 10 >> 1 >> 5 >> 5
10 <h < 20 >> 4 >> 15 >> 60
20 <h < 30 >> 7 >> 25 >> 175
30 <h < 40 >> 2 >> 35 >> 70
40 <h < 50 >> 3 >> 45 >> 135
50 <h < 60 >> 3 >> 55 >> 165

Sum of frequencies = 20

Sum of frequency x midpoint product = 610

Mean height

610/20 = 30.5 cm

5 0

2 years ago

A snack bar sells two types of gronala bars. An apricot bar costs $0.80, and a cranberry bar costs $1.25. write an algebraic exp

Sonja [21]

Answer:

Total Cost (T)= .80a+1.25c

T= a+c

Step-by-step explanation:

This equation has 2 variables. It also has 2 equations

6 0

1 year ago

A summer camp cookout is planned for the campers and their families. There is room for 450 people. Each adult costs $7, and each

Tanya [424]

Answer:

$\left\{\begin{array}{l}x+y\le 450\\7x+4y\le 1,150\end{array}\right.$

Step-by-step explanation:

Let x be the number of adults and y be the number of campers.

There are rooms for 450 people, so

x+y≤450.

Each adult costs $7, then x adults cost $7x.

Each camper costs $4, then y campers cost $4y.

There is a maximum budget of $1,150, so

7x+4y≤1,150

Hence, you get the system of two inequalities:

$\left\{\begin{array}{l}x+y\le 450\\7x+4y\le 1,150\end{array}\right.$

3 0

2 years ago

A triangle has side lengths measuring 3x cm, 7x cm, and h cm. Which expression describes the possible values of h, in cm?

madreJ [45]

It would be 4x < h < 10x
the difference between 3x - 7x =4
and the sum would be 3x + 7x =10

9 0

1 year ago