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Galina-37 [17]
3 years ago
10

Some one help i cant find the answer❗❗​

Mathematics
2 answers:
steposvetlana [31]3 years ago
8 0
<h2>Answer:</h2>

4 \times \frac{1}{2}  \times 1 \times \frac{2}{3}  = \frac{4}{3}

<h2>Explanation</h2>

4 \times  \frac{1}{2}  =  \frac{4}{2}  = 2

1 \times  \frac{2}{3}  =  \frac{2}{3}

2 \times  \frac{2}{3}  =  \frac{4}{3}

olga_2 [115]3 years ago
7 0

Answer:

7 \frac{1}{2}

Step-by-step explanation:

The first step is to change the numbers into improper fractions

4 \frac{1}{2} = \frac{9}{2} and

1 \frac{2}{3} = \frac{5}{3}

The product is now

\frac{9}{2} × \frac{5}{3} ( cancel the 9 and the 3 )

= \frac{3}{2} × \frac{5}{1}

= \frac{3(5)}{2(1)}

= \frac{15}{2} = 7 \frac{1}{2}

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A circle fits inside a semicircle of diameter 24mm
patriot [66]

Answer:

The shaded are is 113\ mm^{2}

Step-by-step explanation:

we know that

The shaded area is equal to the area of the semicircle minus the area of the circle inside the semicircle

step 1

Find the area of semicircle

The area of semicircle is equal to

A=\frac{1}{2}\pi r^{2}

where

r=24/2=12\ mm ----> the radius is half the diameter

substitute

A=\frac{1}{2}\pi(12)^{2}=72\pi\ mm^{2}

step 2

Find the area of the circle inside the semicircle

The area of circle is equal to

A=\pi r^{2}

where

r=12/2=6\ mm ---> the radius of circle inside is half the radius of semicircle

substitute

A=\pi(6)^{2}=36\pi\ mm^{2}

step 3

Find the shaded area

72\pi\ mm^{2}-36\pi\ mm^{2}=36\pi\ mm^{2}

assume

\pi=3.14

36(3.14)=113.04\ mm^{2}

3 significant figures is

113\ mm^{2}

6 0
3 years ago
88 less than 8 times a number is 34 less than twice. turn to equation
dedylja [7]
8x - 88 = 2x - 34

6x = 54

x = 9
3 0
4 years ago
I need help with number 11 and number 12
arlik [135]

Answer:

11) 6

12) 3

Step-by-step explanation:

2 log 2 8

so 2(log2 8)

Base 2 so 2^x=8 so 3.

2*3 is 6.

log a a cubed

base a so a^ x = a^3

x=3

so 3.

Hope this helps ;D

4 0
3 years ago
Read 2 more answers
Two weeks in a row, the golf course hosts a group of golfers. The second week had 10 more golfers than the first week. Use the d
Trava [24]

Answer:

Option A.

Step-by-step explanation:

From the first dot plot the given data set for week 1 is

62, 68, 68, 68, 69, 70, 70, 72, 72, 72, 75, 75, 76, 78, 78, 80, 80, 80, 89, 89

Divide the data in 4 equal parts.

(62, 68, 68, 68, 69), (70, 70, 72, 72, 72), (75, 75, 76, 78, 78), (80, 80, 80, 89, 89)

Range=Maximum-Minimum=89-62=27

Median=\frac{72+75}{2}=73.5

Mean=\frac{\sum x}{n}=\frac{1491}{20}=74.55

From the second dot plot the given data set for week 2 is

62, 68, 68, 68, 69, 70, 70, 72, 72, 72, 75, 75, 76, 78, 78, 80, 80, 80, 85, 86, 86, 86, 88, 88, 88, 88, 89, 89, 89, 89

Divide the data in 4 equal parts.

(62, 68, 68, 68, 69, 70, 70), 72, (72, 72, 75, 75, 76, 78, 78), (80, 80, 80, 85, 86, 86, 86), 88, (88, 88, 88, 89, 89, 89, 89)

Range=Maximum-Minimum=89-62=27

Median=\frac{78+80}{2}=79

Mean=\frac{\sum x}{n}=\frac{2364}{30}=78.8

The range for Week 1 is equal to the range for Week 2.

The median for Week 2 is more than the median for Week 1.

The mean for Week 2 is more than the mean for Week 1.

Therefore, the correct option is A.

6 0
3 years ago
Evaluate the expression when m= 6.<br> m² - 19
densk [106]

Answer:

17.

Step-by-step explanation:

6^2 - 19

= 36 - 19

= 17.

4 0
3 years ago
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