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3 years ago

PLS HELP ME THIS IS HARD

Mathematics

1 answer:

SOVA2 [1]3 years ago

4 0

Answer:

1 dollar is equal to 0.75 E

Step-by-step explanation:

120$ = 90 e -----> 4$ = 3E

250$ = 187.50 e -----> 4$ = 3E

400$ = 300 e -----> 4$ = 3E

----------------------------------

from this we know 4$ = 3E

1 E = 4$/3

1 E = 1.33...$

---------------------

1 $ = 3/4 E

1 $ = 0.75 E

---------------------

1.33...$ dollars is equal to 1 E and

1 $ is equal to 0.75 E

-----------------------------------

90 x 1.33... =120

187.50x1.33...= 250

300 x 1.33... = 400

--------------------------

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5 3х - 10 15. х - 3x — 10 x-(3x - 3

Levart [38]

Answer:

3 - 151 x

Step-by-step explanation:

d/dx(5×3 x - 10×15 x - 3 x - 10 x - (3 x - 3)) = -151

Indefinite integral:

integral(3 - 151 x) dx = 3 x - 75.5 x^2 + constant

Definite integral after subtraction of diverging parts:

integral_0^∞ ((3 - 151 x) - (3 - 151 x)) dx = 0

6 0

2 years ago

The equation πr²Gives the area,A of a circle with a radius,r,. Solve the function for π

max2010maxim [7]

The solution of the function for π is $\pi =\frac{A}{r^{2}}$

Step-by-step explanation:

The equation πr² gives the area A of a circle with a radius r

To Solve the function for π

Write the function
Keep π in one side and all other terms in other side by using any operation you need (+ , - , × , ÷)

∵ A = πr²

- You need to take r² from the right hand side to the left hand

side to keep π in the right hand side alone

∵ r² is multiplied by π

∴ Divide both sides by r²

∴ $\frac{A}{r^{2}}=\frac{\pi .r^{2}}{r^{2} }$

∴ $\frac{A}{r^{2}}=\pi$

- Switch the two sides

∴ $\pi =\frac{A}{r^{2}}$

The solution of the function for π is $\pi =\frac{A}{r^{2}}$

Learn more:

You can learn more about the functions in brainly.com/question/8243712

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6 0

2 years ago

Ratio Question PLEASEE HELPL

IgorC [24]

F:m:s=4:5:7

s=f+18 and from above we see s/f=7/4 so s=7f/4 now we can say:

f+18=7f/4

4f+72=7f

3f=72

f=24 and we know s=f+18 so

s=42

m/s=5/7 so m=42*5/7=30

So Frank got 24, Mary got 30, and Seth got 42.

5 0

3 years ago

Simplify (6 + 5x) + (7x + 3)

sashaice [31]

Combine Like Terms:

=6+5x+7x+3

=(5x+7x)+(6+3)

=12x+9

8 0

3 years ago

Sienna has 5 3/4 pounds of grapes. She eats 1/8 pound and gives 2 1/2 pounds to her brother. How many pounds of grapes does Sien

miskamm [114]

The pounds of grapes left with seinna is 3.125 or $\frac{25}{8}$ pounds

<h3>Solution:</h3>

Given that Sienna has $5\frac{3}{4}$ pounds of grapes

She eats $\frac{1}{8}$ pound and gives $2\frac{1}{2}$ pounds to her brother

To find: pounds of grapes left with seinna

We can find the pounds of grapes left with seinna by subtracting the pounds of grapes she ate and pounds of grapes she gave to brother from the total pounds of grapes she had

Pounds of grapes left with seinna = total pounds of grapes - pounds of grapes she ate - pounds of grapes she gave to brother

$\text {total pounds of grapes }=5 \frac{3}{4}=\frac{4 \times 5+3}{4}=\frac{23}{4}$

$\text {pounds of grapes she ate }=\frac{1}{8}$

$\text {pounds of grapes she gave to brother }=2 \frac{1}{2}=\frac{2 \times 2+1}{2}=\frac{5}{2}$

Substituting the values we get,

$\text {Pounds of grapes left with seinna }=\frac{23}{4}-\frac{1}{8}-\frac{5}{2}$

$\text { Pounds of grapes left with seinna }=5.75-0.125-2.5=3.125$

Thus the pounds of grapes left with seinna is 3.125 or $\frac{25}{8}$ pounds

5 0

2 years ago