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3 years ago

Please help me with this-

Mathematics

2 answers:

Radda [10]3 years ago

5 0

HERE COMES THE SUN DUDU I ANSWERED YOU QUESTION, DUDUU. I FORGOT THE LRYICS .

Harrizon [31]3 years ago

3 0

Use this picture to help you find the answer.

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How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid to obtain a mixture containing a

Margaret [11]

Suppose x quarts of the 50% solution
0.5x+0.2*20=0.4(x+20)
0.5x+4=0.4x+8
0.1x=4
x=40

7 0

3 years ago

The leaning tower of Pisa currently "leans" at a 4 degree angle and has a vertical height of 55.86 meters. How tall was the lean

Marizza181 [45]

Answer:

56 meters.

Step-by-step explanation:

Please find the attachment.

Let the leaning tower's be h meters tall, when it was originally built.

We can see from our attachment that the side with length 55.86 meters is hypotenuse and h is adjacent side for 4 degree angle.

Since we know that cosine relates the adjacent and hypotenuse of a right triangle.

$\text{Cos}=\frac{\text{Adjacent}}{\text{Hypotenuse}}$

Upon substituting our given values we will get,

$\text{Cos (4)}=\frac{55.86}{h}$

$h=\frac{55.86}{\text{Cos (4)}}$

$h=\frac{55.86}{0.99756405026}$

$h=55.996\approx 56$

Therefore, the leaning tower was approximately 56 meters, when it was originally built.

6 0

3 years ago

Solve for x. x - 2(2 - 3/2 x) = 2(4 - x) + 1

STALIN [3.7K]

Answer:

x = 13/6

Step-by-step explanation:

We are the following expression;

x - 2(2 - (3/2)*x) = 2(4 - x) + 1

x - (4 - 3*x) = 8 - 2*x + 1

x - 4 + 3*x = 8 - 2*x + 1

4*x + 2*x = 9 + 4

6*x = 13

x = 13/6

8 0

3 years ago

Please help me please thank you

AleksandrR [38]

Answer:

x = 15

Step-by-step explanation:

angles 2 and 4 are supplementary so they add up to 180

2x + 10 + 4x + 80 = 180

6x + 90 = 180

6x = 90

x = 15

7 0

3 years ago

Read 2 more answers

If The diameter of a circle is 14 yards.what is the circles circumference

amm1812

Answer:

14π yards^2, or 43.98^2 yards rounded to 2dp

Step-by-step explanation:

circumference = diameter x π

6 0

3 years ago