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malfutka [58]
3 years ago
7

A school district has a simple question: If students take their math classes in the morning instead of in the afternoon, will th

eir test scores improve?
In 20 words or fewer, describe what is being measured in this example and what variable is being manipulated or changed.
Mathematics
2 answers:
garri49 [273]3 years ago
8 0

Answer:

Yikes wish I could help

Step-by-step explanation:

Dovator [93]3 years ago
4 0

Answer:The students ability to perform better or worse is being measured.The time diffrence is being manipulated.

Step-by-step explanation:

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christen has to run around the rectangle soccer field during practice. The soccer field measures 60 meters long by 45 meters wid
Elena L [17]

Answer:

210 m

Step-by-step explanation:

Perimeter is the distance around the outside of a two-dimensional shape.

Area is the space inside of a two-dimensional shape. We can also think of area as the amount of space a shape covers.

Christen ran around the soccer field, so she ran around the perimeter.

We can find the perimeter by adding all of the side lengths.

Perimeter=60 m+45 m+60 m+45 m

Christen ran 210m.

7 0
3 years ago
The linearized regression equation for an exponential data set is log ŷ = 0.14x + 0.4, where x is the number of years and y is t
djyliett [7]

Option C: 316 is the predicted population when x=15

Explanation:

The regression equation for an exponential data is \log y=0.14x+0.4

Where x is the number of years and

y is the population

We need to determine the predicted population when x=15

The population x can be determined by substituting x=15 in the equation \log y=0.14x+0.4

Thus, we have,

\log y=0.14(15)+0.4

\log y=2.1+0.4

\log y=2.5

Using the logarithmic definition \log _{a}(b)=c then b=a^{c}

\log _{10}(y)=2.5 \Rightarrow y=10^{2.5}

y=316.22776 \ldots

Rounding off to the nearest whole number, we get,

y=316

Thus, the predicted population when x=15 is 316

Hence, Option C is the correct answer.

7 0
3 years ago
Angela uses a scanner to make a reduced-size (smaller) copy of a rectangular photo that is 8 inches long and 4 inches wide. The
svet-max [94.6K]

Answer:

The new width = 2 inches

Step-by-step explanation:

Original dimensions of the rectangular photo:

Length : width = 8 inches : 4 inches

Reduced dimensions of the rectangular photo:

Let

x = the new width

Length : width = 4 inches : x inches

Equate both dimensions to get the value of x

Length : width

8 inches : 4 inches = 4 inches : x inches

8 / 4 = 4 / x

Cross product

8 * x = 4 * 4

8x = 16

x = 16/8

x = 2 inches

The new width = 2 inches

6 0
3 years ago
Help find the slope of each line
Tju [1.3M]

Answer:

1. The slope of the graph is 3/1 or 3

2. The slope of the graph is 3/4

3. The slope of the points is 2

4. The slope of the points is Undefined

5. The slope of the graph is 1

6. The slope of the points is -1/4

Step-by-step explanation:

To find the slope of the graph you use rise over run

To find the slope of the points you use y2-y1 over x2-x1

Hope this is very helpful!!

4 0
2 years ago
Read 2 more answers
Last year, Megan earned £158900 before tax
ladessa [460]
What’s the question?
6 0
3 years ago
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