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3 years ago

MARKING BRAILIEST 20 POINTS! Please Help! Math for Middle School!!!

Mathematics

2 answers:

Kitty [74]3 years ago

8 0

Answer:

720 and 224 (i think)

Step-by-step explanation:

kotegsom [21]3 years ago

6 0

Answer:

1. 720 inches squared

2. 99 cm squared

Step-by-step explanation:

First question:

break up the shapes.

shape 1: square

find the area of the square

A=LxW

A=24x24=576

shape 2: triangle

A=1/2bh

to find base 36-24= 12

12x24=288/2=144

144+576

Second question:

find the area of the whole shape

9x15=135

find the area of the smaller shape

6x6=36

135-36= 99

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If you do 12 minutes of a 45 minute workout how many calories is it? (the 45 minutes is 1000 calories in total)

velikii [3]

Answer:

266 $\frac{2}{3}$

Step-by-step explanation:

if a 45 minute workout is 1000 calories, at the same rate, a 12 minute workout would be 266 calories and 2 thirds. $\frac{12}{45}$ x 1000 = 266 $\frac{2}{3}$

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2 years ago

X^2 -10x = 8 solve show work

likoan [24]

Answer:

Step-by-step explanation:

X^2-10x-8=0

Solve simultaneously

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3 years ago

Read 2 more answers

Order? 2x^2 - 4x + x^6+ 8 + 3x^10

polet [3.4K]

Answer:

3x^10 + x^6 + 2x^2 - 4x + 8

Step-by-step explanation:

In descending order by powers of x: 3x^10 + x^6 + 2x^2 - 4x + 8

3 0

3 years ago

Solve the inequality and describe the solution set: y-6 ≥ 12

Finger [1]

Y≥18

You want to get the y only on one side of the equation. To get rid of the -6 you have to add 6 to both sides to even out the equation.

y-6≥12
+6 +6
y ≥18

3 0

3 years ago

Read 2 more answers

A 90 percent confidence interval for the slope of a regression line is determined to be (-0.181, 1.529). Which of the following

GenaCL600 [577]

Answer: a. The correlation coefficient of the data is positive.

Step-by-step explanation:

Estimated slope of sample regression line = $\dfrac{Upper \ limit + lower\ limit}{2}$

Here , confidence interval : (-0.181, 1.529)

Estimated slope of sample regression line = $\dfrac{-0.181+1.529}{2}$

$=\dfrac{1.348}{2}\\\\=0.674\ \ \ \ [\text{ positive}]$

⇒Correlation coefficient(r) must be positive, So a. is true.

But, d. and e. are wrong(0.674 ≠ 0 or 1.348).

We cannot check residuals or its sum from confidence interval of slope of a regression line, so b is wrong.

We cannot say that scatterplot is linear as we cannot determine it from interval, so c. is wrong

So, the correct option : a. The correlation coefficient of the data is positive.

7 0

3 years ago