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3 years ago

Help pls hdhjdhdjdjjd

Mathematics

1 answer:

elena-14-01-66 [18.8K]3 years ago

3 0

Answer:

Which one do we answer

Step-by-step explanation:

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What is the relationship between 0.04 and 0.004

podryga [215]

0.004 is one tenth of 0.04 or 0.04 is ten times 0.004

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3 years ago

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India can paint 3 1/5 walls in one day. How many walls can she paint in 5 1/2 days?

sladkih [1.3K]

Change the mixed numbers into fractions.

$3 \frac{1}{5}$
$3 * 5 = 15$
$15 + 1 = 16$
$3 \frac{1}{5} = \frac{16}{5}$

$5 \frac{1}{2}$
$5 * 2 = 10$
$10 + 1 = 11$
$5 \frac{1}{2} = \frac{11}{2}$

Multiply these fractions together:

$\frac{16}{5} * \frac{11}{2} = \frac{176}{10} 
$

Simplify the fraction.

$\frac{176}{10} / \frac{2}{2} = \frac{88}{5}$

$88 / 5 = 17 R3 = 17 \frac{3}{5}$

India can paint 17 and 3/5 walls in 5 and a half days.

7 0

3 years ago

2 d2 + 15d + 23 = 3<br> It’s quadratic formula

DENIUS [597]

Answer:

-15 plus or minus the square root of 65 all over 4 (All over means fraction)

4 0

3 years ago

After driving 378 miles, they have used 14 gallons of gas. They have 243 miles left to drive on the trip. How much gas will they

dsp73

Answer:

9 gallon of gas

Step-by-step explanation:

When distance covered is 378 miles, they have used 14 gallons of gas

We need to find how much gas will they need to finish the trip if 243 miles left to drive on the trip.

378 miles = 14 gallons of gas

For 1 mile,

1 gallon of gas is used for $\dfrac{14}{378}\ \text{gallon of gas is used}$

For 243 miles,

$= \dfrac{14}{378}\times 243\ \text{miles}\\\\=9\ \text{gallon of gas is used}$

Hence, for 243 miles 9 gallon of gas is used.

6 0

3 years ago

A track and field playing area is in the shape of a rectangle with semicircles at each end. See the figure. The inside perimeter

Schach [20]

Answer:

Step-by-step explanation:

Let x be the track straights lengths

Let y be the track ends diameter and the other rectangle side lengths.

1800 = 2x + πy

y = (1800 - 2x) / π

A = xy

A = x((1800 - 2x) / π

A = (1/π)(1800x - 2x²)

dA/dx = (1/π)(1800 - 4x)

0 = (1/π)(1800 - 4x)

0 = 1800 - 4x

4x = 1800

x = 450 m

y = (1800 - 2(450)) / π

y = 900/π or approximately 286.5 m

8 0

3 years ago