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3 years ago

I need help with this please.

Mathematics

1 answer:

Llana [10]3 years ago

3 0

I'm certain up until the reflection. after that there's some guess work just fyi

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Use the given scale factor and the side lengths of the scale drawing to

Sergio [31]

I’m pretty sure the answer is C

7 0

3 years ago

Mrs. Jolley is thinking of buying solar panels to put on the roof of her new house. The sunny solar company told her that for ev

Nataliya [291]

Answer:

y = $30x ;

1 : $30

Step-by-step explanation:

Given that :

$60 is saved in electricity bill for every 2 panels

Model, y

Amount saved, y = amount saved per panel * number of panels

Let number of panels = x

Hence, total amount saved, y ;

y = $30x

Ratio of panels to money saved :

Number of panels : amount of money saved

2 : $60

1 : $30

Hence, $30 is saved in cost of electricity bill per 1 solar panel purchased.

8 0

3 years ago

A survey claims that the percent of an entire population that agrees with redeveloping the city park is likely between 49.1% and

kumpel [21]

Answer:

567 people were surveyed.

Step-by-step explanation:

Given:

A survey claims that the percent of an entire population that agrees with redeveloping the city park is likely between 49.1% and 57.5%.

Now, to find total people who were surveyed.

According to survey percent of population agrees between = 49.1% to 57.5%.

So, we need to find the error of margin:

$\frac{57.5\%-49.1\%}{2}$

$=\frac{8.4\%}{2}$

$=4.2\%.$

Let the number of people surveyed be $n.$

Now, to get the number of people surveyed:

$4.2\%=\frac{1}{\sqrt{n} }$

$\frac{4.2}{100}=\frac{1}{\sqrt{n} }$

$0.042=\frac{1}{\sqrt{n} }$

By cross multiplying we get:

$\sqrt{n}=\frac{1}{0.042}$

$\sqrt{n}=23.81$

Using square root on both sides we get:

$n=566.91.$

Approximately:

$n=567.$

Therefore, 567 people were surveyed.

7 0

3 years ago

Scott and Isaac went to the school carnival. Scott ride on 5 rides and played 4 games. Isaac rode on 7 rides played 2 games. If

BlackZzzverrR [31]

Answer:

The cost of the rides are 3 tickets

And 1 ticket per game

The ride and game cost 3 tickets and 1 ticket for each respectively.

Step-by-step explanation:

Step 1 of 5

Let a be the number of tickets per ride costs. And b be the number of tickets per game costs.Thus from the given, we get the equations. For Scott, 5a+4b=19 For Isaac, 7a+2b=23

Step 2 of 5

Multiplying the equation 2 by 2, we get 5a+4b=19→1 14a+4b=46→2

Step 3 of 5

By subtracting both the equations, we get

(−)5a+4b=1914a+4b=46

_____________

−9a =−27

a=−27−9⇒a=3

Step 4 of 5

Substituting the above value in the equation 1, we get5(3)+4b=1915+4b=194b=19−154b=4b=44⇒b=1

Step 5 of 5

The solution is (3,1).The cost of the rides is 3 tickets per ride.The cost of the games is 1 ticket per game.

sorry its really confusing this how I was taught tho.

7 0

3 years ago

Help me plz anyone this is hard

GaryK [48]

What is the question?

4 0

4 years ago