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3 years ago

6

Jesse practices the trumpet for a total of 165 minutes during the first week of school. He practices for 245 minutes during the

second week. Why the estimates when you round them on nearest 10 minutes and nearest 100 minutes are so close to each other?

1 answer:

JulsSmile [24]3 years ago

8 0

So u can make shur your Awser is resinuble

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the length of a rectangle is 5 times as long as its breadth and its area is 1620 m² find area of square whose perimeter is equal

Rus_ich [418]

Answer:

Area of the square is 2916 $m^{2}$ .

Step-by-step explanation:

Let the breadth of the rectangle be represented by w. So that;

length of rectangle = 5w

Area of rectangle = length x breadth

= 5w x w

1620 = 5 $w^{2}$

divide through by 5 to have,

$w^{2}$ = 324

w = $\sqrt{324}$

= 18

Thus, the breadth of the rectangle is 18 m.

length = 5 w = 5 x 18

= 90 m

The length of the rectangle is 90 m.

Perimeter of the rectangle = 2(l + w)

= 2( 90 + 18)

= 216 m

Perimeter of a square = 4l

where l is the length of its side.

Given that the perimeters of the rectangle and square are equal, then;

4l = 216

l = $\frac{216}{4}$

= 54

length of the side of square is 54 m.

Therefore,

Area of square = $l^{2}$

= $54^{2}$

= 2916

Area of the square whose perimeter is equal to that of the rectangle is 2916 $m^{2}$ .

6 0

2 years ago

(-5q^2 + 6q + 7) - (-q^2 + 4q)

beks73 [17]

Steps to solve:

(-5q^2 + 6q + 7) - (-q^2 + 4q)

~Distribute the left side

-5q^2 + 6q + 7 + q^2 - 4q

~Combine like terms

-4q^2 + 2q + 7

Best of Luck!

5 0

2 years ago

Read 2 more answers

Sophia scored 92% in a math test. if the test had 50 question how many did she get right

german

Answer: 46

Step-by-step explanation:

percentage scored = 92

number of correct question = x

total number of questions = 50

The formula for calculating the percentage scored

= number of correct question / total number of questions x 100

That is

92 = $\frac{x}{50}$ x $\frac{100}{1}$

$92 = \frac{100x}{50}$

cross multiplying :

$100x = 92$ x $50$

$100x = 4600$

dividing through by 100 , we have

$x = 46$

Therefore, she got 46 questions right

7 0

2 years ago

Find the slope of the line through the points (3,2) and (4,5).

igomit [66]

Answer:

<h2>The answer is 3</h2>

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

$m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\$

where

(x1 , y1) and (x2 , y2) are the points

From the question we have

$m = \frac{5 - 2}{4 - 3} = \frac{3}{1} = 3 \\$

We have the final answer as

<h3>3</h3>

Hope this helps you

5 0

2 years ago

The equations x + 5 y = 10, 3 x minus y = 1, x minus 5 y = 10, and 3 x + y = 1 are shown on the graph below. On a coordinate pla

natita [175]

Answer:

The question is missing, so I will answer all the solution for each possible system of two equations.

Step-by-step explanation:

The equations

x + 5 y = 10 (red)

3 x - y = 1 (blue)

x - 5 y = 10 (green)

3 x + y = 1 (purple)

are shown in the picture atatched. The intersection between two lines is the solution of their system.

<u>system:</u>

x + 5 y = 10 (red)

3 x - y = 1 (blue)

<u>solution</u>: (0.938, 1.813)

<u>system</u>:

x + 5 y = 10 (red)

x - 5 y = 10 (green)

<u>solution</u>: (10, 0)

<u>system</u>:

x + 5 y = 10 (red)

3 x + y = 1 (purple)

<u>solution</u>: (-0.357, 2.071)

<u>system</u>:

3 x - y = 1 (blue)

x - 5 y = 10 (green)

<u>solution</u>: (-0.357, -2.071)

<u>system</u>:

3 x - y = 1 (blue)

3 x + y = 1 (purple)

<u>solution</u>: (0.333, 0)

<u>system</u>:

x - 5 y = 10 (green)

3 x + y = 1 (purple)

<u>solution</u>: (0.938, -1.813)

7 0

2 years ago