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3 years ago

(02.05)

Mathematics

2 answers:

egoroff_w [7]3 years ago

5 0

3/15*100=20 percent

OleMash [197]3 years ago

3 0

Answer:

John ate 20% of the cookies

Explanation:

Given:

total cookies John bought= 15 cookies,

Number of cookies john ate = 3 cookies

To Find:

Percentage of cookies John ate. =?

Solution:

We know that the formula of finding the percentage of any thing which is given as

$percentage=\frac{(given value)}{(total value)}\times100$

So according to question, we have given value = 3

And Total value = 15

Now we will put these values in the formula of percentage to find out the % of cookies that he ate.

$percentage=\frac{3}{15}\times100=20\%$

Hence , he ate 20% of cookies

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a parabolic lamp is facing due east. The bulb (located at the focus) is 8 inches away from the vertex (located at the origin). t

True [87]

9514 1404 393

Answer:

3 1/8 inches

Step-by-step explanation:

For focus-vertex distance p, the equation of the parabola can be written ...

y = x^2/(4p)

Here, we have p=8. We want to find the value of y when x=10 (the radius of the dish). That is ...

y = (10^2)/(4·8) = 100/32 = 3 1/8

The dish is 3 1/8 inches deep.

7 0

3 years ago

I don’t know how you do 17.1 divided by 0.9.

andreyandreev [35.5K]

The answer is 19

work :

1-multiply the numbers by a submultiple of 10 to remove the decimal points.
$17.1 \times 10 = 171 \\ \\ 0.9 \times 10 = 9$

2-

now do the division :
$171 \div 9 = 19$

so the answer is 19

note: there is no need to get it back to decimal number unless you multiply just one of the numbers or multiply the numbers with different submultiples of 10

good luck

7 0

3 years ago

Read 2 more answers

Which of the following equations have infinitely many solutions? Choose all answers that apply: Choose all answers that apply: (

TiliK225 [7]

Answer:

All options are correct.

Step-by-step explanation:

In option (A), the given equation is

$x-37=x-37$

Add 37 on both sides.

$x-37+37=x-37+37$

$x=x$

Subtract x from both sides.

$x-x=x-x$

$0=0$

LHS=RHS for all values of x. It means equation x-37=x-37 has infinite many solutions.

Similarly.

In option (B), the given equation is

$73x-37=73x-37$

$73x=73x$

$0=0$

LHS=RHS for all values of x. It means equation 73x-37=73x-37 has infinite many solutions.

In option (C), the given equation is

$37x-37=37x-37$

$37x=37x$

$0=0$

LHS=RHS for all values of x. It means equation 37x-37=37x-37 has infinite many solutions.

In option (D), the given equation is

$74x-37=74x-37$

$74x=74x$

$0=0$

LHS=RHS for all values of x. It means equation 74x-37=74x-37 has infinite many solutions.

Therefore, all options are correct.

5 0

3 years ago

Read 2 more answers

¿Cómo se hace este problema ?

drek231 [11]

1: 3/4 2: 6/8 I’m pretty sure is the answer sorry if I’m wrong

6 0

3 years ago

Charlene puts together two isosceles triangles so that they share a base, creating a kite. The legs of the triangles are 10 inch

enot [183]

From the information given you have:

1) Smaller diagonal of the kite: 16 inches

2) Larger diagonal of the kite: height of one triangle (h1) + height of the other triangle (h2)

3) Calculation of the height of the smaller triangle, h1:

10^2 = (16/2)^2 + (h1)^2 => h1 = √ [10^2 - 8^2] = 6

4) Calculation of the height of the larger triangle, h2

17^2 = (16/2)^2 + (h2)^2 => h2 = √[17^2 - 8^2] = 15

5) Larger diagonal = h1 + h2 = 6 + 15 = 21

Answer: 21 inches

7 0

3 years ago

Read 2 more answers