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3 years ago

PLEASE HELP ME AGAIN, I REALLY NEED IT.

Mathematics

2 answers:

Angelina_Jolie [31]3 years ago

5 0

Answer + Step-by-step explanation:

3. {($2 ÷ by the pound) x lbs. of peaches} + ($1.50 x lbs. of apples) = $15

4. {(16mi. ÷ by the hour) x hours biked) + {(2mi. ÷ by the hour) x hours walked} = 32 miles

Aleksandr-060686 [28]3 years ago

4 0

Answer:

$2/p x peaches+$1.5/p x apples=15

16/h x hb+2/h x hw=32

Here you go, hopw this helps! :-)

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What is the value of x?

Rufina [12.5K]

Answer:

X=23

Step-by-step explanation:

You should know that a triangle =180 degrees

Add all your angles together and =180

66+2x+3+3x-4=180

add similar terms

5x+65=180

Move your 65 to the other side

5x=115

x=23

(Optional)

to check if your answer is right substitute your x and add all angles together you should get 180 degrees.

6 0

4 years ago

a rectangular pool has an area of 640 square feet. the is 12 feet shorter than the width. the length of the pool is feet and the

Ray Of Light [21]

Given:

Area of rectangular pool = 640 square feet

The length is 12 feet shorter than the width.

To find:

The length and width of the pool.

Solution:

Let width of the pool = x feet

Then, Length of the pool = (x-12) feet

Area of a rectangle is

$Area=length\times width$

$Area=(x-12)\times x$

Area of pool is 640 square feet. So,

$(x-12)x=640$

$x^2-12x-640=0$

Splitting the middle term, we get

$x^2-32x+20x-640=0$

$x(x-32)+20(x-32)=0$

$(x+20)(x-32)=0$

Using zero product property, we get

$x=-20,32$

Dimensions cannot be negative. So, x=32.

Now,

Width of the pool = 32 feet

Length of the pool = 32-12 = 20 feet

Therefore, the length of the pool is 20 feet and width is 32 feet.

7 0

3 years ago

If you flip three fair coins, what is the probability that the first two flips will both be heads, and the third flip will be ei

brilliants [131]

Answer:

2 head, 1 tail.

Step-by-step explanation:

i did it 3 times just now. i got. 2 heads, 1 tail. i keept on doing it but i keep on getting 2 heads and 1 tail. but once i got 1 head and 2 tails. but most likely you will get 2 head and 1 tail.

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3 years ago

A rectangle with sides 12 cm and 14 cm has the same diagonal as a square.

adelina 88 [10]

Answer:

Length of side of square $=\sqrt{170}$

Step-by-step explanation:

Sides of rectangle $=12,14\ cm$

let $x$ be diagonal of rectangle

<u><em>Pythagorean theorem : The square of hypotenuse is equal to sum of square of sides.</em></u>

Here hypotenuse $=x$

$x^{2} =12^{2}+14^{2}\\x^{2} =144+196\\x^{2} =340\\x=\sqrt{340}$

Diagonal of square $=\sqrt{340}$

let side of square $=a$

again use pythagorean theorem

$340=a^{2}+a^{a}\\2a^{2}=340\\a^{2}=170\\a=\sqrt{170}$

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3 years ago

Mei draws three pairs of parallel lines that are each intersected by a third line. In each figure, she measures a pair of angles

blsea [12.9K]

Consider the picture, and check the choices:

A. The alternate interior angles, are also called Z angles, because of the Z shape they create.

examples of Z angles, are the green angles and purple angles shown in the picture.

They really look identical (congruent)

B.

No: check the green angles in figure 1, and purple angles if figure 2. they are not acute.

C.

No. In each case, we have the same number of acute angles and obtuse angles,

except case3, where the intersecting line, is perpendicular to the parallel lines.

D.
No, by the same reasoning used in part C. Only when the intersecting line cuts the 2 parallel lines perpendicularly, all the angles are congruent.

Answer: A

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3 years ago