MATHEMATICS MIDDLE SCHOOL

Whats the area?

PLEASE HELP!!! EMEGENCY!!!

Answers

Answer 1

Answer:

The area is all the space in a shape.

Area for a polygon is l*w

Area for a triangle is l*w/2

Area for a circle is pi*r^2

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Jared is putting a new deck off the kitchen. The deck will be 94.45 inches deep. He will use 16 boards that are each 5.7 inches wide. He has to leave a small space between the boards. If the 15 spaces between the boards are all equal, how wide will they be?
Which are the center and radius of the circle with equation (x + 5)2 + (y - 4)2 = 9?
Find the domain:y= (6+9x)/(6−|x−1|)
Mateo is making 2Gallons of fruit punch. How many pints of fruit punch is he making
A rabbit weighs 4 pounds and 6 ounces how many ounces does the rabbit weigh

What is The approximate amount

Answers

Answer: About 80 yards

Step-by-step explanation:

From A to B =20 yards (same for E and D) right there you already have 40 yards. Every 2 units 10 yards. F to A is the same length of half of A (10 yards). If you add them all together the perimeter is about 80 yards.

Answer: 85

Step-by-step explanation:

Writing an Equation

Find the length of each side and add them up to get the total perimeter.

We know that there are 6 sides, AB, BC, CD, DE, EF, and FA

We also know that AB = ED and BC = CD = EF = FA

So the total perimeter would be AB + BC + CD + DE + EF + FA = 2AB + 4BC

Finding length of AB

This line goes from (-2,2) to (2,2) so we can find the length by subtracting the x coordinates since the y coordinates are the same

AB = 2 - (-2) = 4

Finding length of BC

Using the Pythagorean Theorem, $a^(2) +b^(2) =BC^(2)$ we can find the length of BC

This line goes from (2,2) to (3,0)

The vertical distance (a) is |0-2| = 2

The horizontal distance (b) is |3-2| = 1

So $2^(2) +1^(2) =BC^(2)$

$BC^(2) = 5$

$BC = √(5)$

Total length

Using the equation 2AB + 4BC to find the perimeter we get

$(2 * 4) + (4 * √(5) )$

= $8 +( √(16) * √(5) )$

= $8 + √(16 * 5)$

= $8 + √(80)$

Since $√(80)$ is approximately 9, we'll substitute in 9 (assuming we don't have a calculator)

≃ 8 + 9

= 17 units

Converting units

Each unit is 5 yards, so use this ratio get the perimeter in yards

17 units * 5 = 85 yards

You saved 850$ from your summer job last summer. You put it in a account that earns simple interest each month. After 9 Months your account is worth 1,003$. What percent interest did you earn each month?

Answers

Interest earned=$1003−$850=$153
Principal=$850
Time=9 months
Rate=Interest per month

Use the formula to solve for interest: (Interest)=(Principal)×(Rate)×(Time)
153 = 850 × R × 9
Simplify.
153 = 7650 × R
Divide both sides by 7650.
0.02 = Rate
She earned 2% interest each month.

The function y = 100(0.5) x
4
models the percent, y, of an initial dose of medicine remaining in a patientbloodstream after x hours.

Based on the model, what percent of the initial amount of medicine will remain in the patient’s bloodstream after 10 hours? Round to the nearest whole percent.

Answers

The percentage of the initial amount of medicine that will remain in the patient’s bloodstream after 10 hours is, 17.7%.

What is a Function?

A function assigns the value of each element of one set to the other specific element of another set.

Since, The function that models the percentage, y, of an initial dose of medicine remaining in a patient's bloodstream after x hours is given as,

⇒ $y = 100 (0.5)^(x/4)$

Now, if we substitute the value of x as 10 because we need to find the percentage of medicine in the body after 10 hours.

Therefore, the value can be written as,

⇒ $y = 100 (0.5)^(x/4)$

Put x = 10;

⇒ $y = 100 (0.5)^(2.5)\n$

⇒ y = 17.677

⇒ y = 17.7

Thus, the percentage of the initial amount of medicine that will remain in the patient’s bloodstream after 10 hours is 17.7%.

Learn more about Function visit:

brainly.com/question/5245372

#SPJ7

Answer:

18% , 27 Hours

Step-by-step explanation:

On edge 2020

Lana and Emily are playing a competitive word game. Whoever plays all of their tiles first gets to add the value of their word plus the total value of all of their opponent’s remaining tiles to their score. Also, the opponent must subtract the total value of all of their tiles from their score.Suppose that the current score is: Lana 324, Emily 358. If Lana’s last word is worth 7 points, how many points does she need Emily to have in her hand in order to win?

Suppose that the current score is: Lana 324, Emily 358. If Lana’s last word is worth 7 points, how many points does she need Emily to have in her hand in order to win? ___________ points

Hint: If Emily had 5 points in her hand, by how much would the difference between the player’s scores change?

Answers

Lana gets the 7 points so she ends up with 331. She will then be 358-331=27points behind Emily. She needs to win, so there needs to be 1 more than 27 points of change in the score, or 28 points. Emily's hand value is added to Lana's and also subtracted from Emily's so her hand is worth twice the value as the amount. (If the hand is worth 10 points, it changes the scores by 20 points). Thus, we only need half of the 28 points of change for Lana to win. The answer is 14 points.

Sarah's English test had 90 questions and she got 18 questions wrong. What percent of the questions did she get correct?

Answers

So,

Sarah got 72/90 questions correct.

Simplify 72/90
72 = 2 * 2 * 2 * 3 * 3
90 = 2 * 3 * 3 * 5

Cross out "ones"
2 * 2 over
5
4/5 = 80%

Sarah got 80% of the questions correct

90-18=72 questions (answered correct)
72/90=0.8
To get the percent, you have to move the decimal point over two places, so 80%

What is 48399 rounded to the nearest 10