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3 years ago

Math on khan academy

Mathematics

1 answer:

IRINA_888 [86]3 years ago

5 0

The answer is b I believe

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Help please!!!!!!!!!!!

monitta

Answer:

5a. 2^2+2^2=c^2

5b. 2.8

5c. 13^2-5^2=b^2

5d.12

Step-by-step explanation:

All are based on a^2+b^2=c^2

2^2=4. 4+4=8 The square root of 8 is 2.8

You work backwards with the other one. 5^2+b^2=13^2

8 0

3 years ago

Raymond ate three more pieces of fruit today than he did yesterday today he ate four pieces write an equation to find out how ma

stich3 [128]

Answer:

Raymond ate 1 piece of fruit yesterday.

Equation:

4 - 3 = 1

4 0

3 years ago

Triangle PSV is shown on the coordinate grid.

Elden [556K]

Answer:

The slope of PV is -4. i.e. $m=-4$

Step-by-step explanation:

Considering the triangle PSV as shown on coordinate grid

From the coordinate grid, it is clear that:

The coordinates of P vertex is (2, 4)

The coordinates of V vertex is (3, 0)

The slope of PV can be used using the slope formula

$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(2,\:4\right),\:\left(x_2,\:y_2\right)=\left(3,\:0\right)$

$m=\frac{0-4}{3-2}$

$m=-4$

Therefore, the slope of PV is -4. i.e. $m=-4$

Keywords: slope, coordinate grid

Learn more slope between two points from brainly.com/question/1128277

#learnwithBrainly

3 0

3 years ago

Read 2 more answers

Kim is making a bouquet for her friend. She used x tulips and some daffodils in the bouquet. The number of daffodils is equal to

zzz [600]

Kim used 4 tulips in the bouquet.

Step-by-step explanation:

Tulips used = x

Daffodils used = x²

Total flowers in bouquet = 20

According to given statement;

$x^2+x=20\\x^2+x-20=0$

Factorizing the Eqn

$x^2+5x-4x-20=0\\x(x+5)-4(x+5)=0\\(x+5)(x-4)=0$

Either,

x+5=0 => x= -5

Or,

x-4=0 => x = 4

As the number of flowers cannot be negative, therefore,

x = 4 (Where x is the number of tulips used)

Kim used 4 tulips in the bouquet.

Keywords: factorization, subtraction

Learn more about factorization at:

#LearnwithBrainly

3 0

4 years ago

0.2 of 0.5<br> EEEEEEEEEEEEEEEEEEE

Rudik [331]

Answer:

Im guessing this means 20% of 0.5, in that case it is 0.1

Step-by-step explanation:

you can use a calculator and put 0.2*0.5

But also in your head you can do whats 20% of 5, so what times 5 equals 5? 1

so 1/10 is 0.1 giving you your answer

7 0

4 years ago