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asambeis [7]
3 years ago
14

How many tenths are equal to 1/2+4/5?

Mathematics
1 answer:
Artemon [7]3 years ago
7 0
Answer: 13

1/2+4/5= 13/10 so the answer would be that 13 tenths equal 13/10
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Eric lives 21 miles away from where he works. After leaving his workplace, he drives at a constant speed of 42 miles per hour fo
Mazyrski [523]
He's driving 42mph. 42m/60h=0.7mpm. 12 minutes x 0.7 mile per minute= 8.4 miles.  21-8.4=12.6 miles left .  12.6 x 0.7= 8.86 minutes left or about nine
5 0
3 years ago
Which is the next step in the following construction of a regular hexagon?
laila [671]

Answer:

With compass setting the same as line segment PA, place the compass

at C and draw an arc that intersects the circle ⇒ answer D

Step-by-step explanation:

<em>Lets revise the step of construction a regular hexagon</em>

1. Draw circle with center P; put point A on the circle's edge at

any place

2. With compass setting the same as line segment PA, place the

compass at A and draw an arc that intersects the circle at B

3. With compass setting the same as line segment PA, place the

compass at B and draw an arc that intersects the circle at C

4. <em>With compass setting the same as line segment PA, place the</em>

<em>compass at C and draw an arc that intersects the circle</em> at D

5. Contain with the same step of placing the compass at the previous arc and draw an arc with same distance of PA until you reach point A again, then join each arc on the circle forming the regular hexagon

The given steps are:

Circle with center P; point A is along the circles edge, an arc at point B

is along the circles edge, and an arc at point C is along the circles edge

According to the steps above, the next step is:

<em>With compass setting the same as line segment PA, place the </em>

<em>compass at C and draw an arc that intersects the circle</em> (step 4)

7 0
3 years ago
Read 2 more answers
If 42% of a number N is 8.4, what is the value of N?
vfiekz [6]

Answer:

20

Step-by-step explanation:

1% = .2 so 100%=20

6 0
4 years ago
An experiment involves 17 participants. From these, a group of 3 participants is to be tested under a special condition. How man
lakkis [162]

Answer: 680

Step-by-step explanation:

When order doesn't matter,then the number of combinations of choosing r things out of n = ^nC_r=\dfrac{n!}{r!(n-r)!}

Given: Total participants = 17

From these, a group of 3 participants is to be tested under a special condition.

Number of groups of 3 participants chosen = ^{17}C_3=\dfrac{17!}{3!(17-3)!}\

^{17}C_3=\dfrac{17!}{3!(17-3)!}\\\\=\dfrac{17\times16\times15\times14!}{3\times2\times14!}\\\\=680

Hence, there are 680 groups of 3 participants can  be chosen,.

8 0
4 years ago
Need help ASAP plzzzz
DaniilM [7]

Answer: 22.8 ft. squared

Step-by-step explanation:

5.7 x 8 = 45.6 ÷ 2 = 22.8

area of a triangle = base x height ÷ 2

3 0
4 years ago
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