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3 years ago

Jernel has to figure out the area of her

Mathematics

1 answer:

Zielflug [23.3K]3 years ago

5 0

Answer:

The answer for this question will be 324 square roots

Step-by-step explanation:

The length and width of a rectangle are interchangeable, however we usually use the longer side for the length.

If that's the case, then the square is 18 x 18 = 324 square units.

On the other hand, the square could also be 10 x 10 square units. You choose ! In reality, the length and width, like I said, are interchangeable.

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Please show me all of the steps for multiplying 10×.25

trapecia [35]

10
x.25<------ 2 decimals
_____
50
+200
______
250<----move the decimal 2 times to the right

the answer is 2.5

6 0

4 years ago

Read 2 more answers

I need help with this

velikii [3]

Answer:

very much do not know

Step-by-step explanation:

3 0

3 years ago

Barbara drove a total of 580.5 580.5 miles in two legs of a trip. In the first part of her trip, she drove at a constant speed f

S_A_V [24]

Answer:

During the first leg, her speed was 61 mph;

During the second leg, her speed was 51 mph

Step-by-step explanation:

In this question, we are told to calculate the speed at which Barbara traveled in both legs of her trip.

Since we do not know the constant speed at which she drove during the first leg of her trip, we can represent this by x. So we can say her speed during the first leg of the trip is x mph.

For the second leg, she drove 10 mph less. Hence her speed here would be (x-10) mph

Let’s start by calculating the distance she traveled during the first leg.

Mathematically, distance traveled is = speed * time = x mph * 4.5h = 4.5x miles

For the second part of the trip, the distance traveled is (x -10) * 6 = (6x - 60) miles

Now the twist to this is that if we add both distances, we get the total distance traveled.

Let’s do that;

4.5x + 6x - 60 = 580.5

10.5x = 580.5 + 60

10.5x = 640.5

x = 640.5/10.5 = 61 mph

In the second leg, her speed would be 61 - 10 = 51 mph

3 0

3 years ago

If (3-4i) (x+yi) = 1 + 0i. The value of x and y is

Black_prince [1.1K]

Step-by-step explanation:

$\textsf{\large{\underline{Solution}:}}$

<h3>Given That:</h3>

$\rm: \longmapsto (3 - 4i)(x + iy) = 1 + 0i$

$\rm: \longmapsto 3(x + iy) - 4i(x + iy)= 1 + 0i$

$\rm: \longmapsto 3x + 3iy - 4ix +4y= 1 + 0i$

On rearranging the terms, we get:

$\rm: \longmapsto (3x + 4y)+ (3y - 4x)i = 1 + 0i$

Comparing both sides, we get:

$\rm: \longmapsto 3x + 4y = 1 --- (i)$

$\rm: \longmapsto 3y - 4x = 0 --- (ii)$

Multiplying (i) by 4, we get:

$\rm: \longmapsto 12x + 16y = 4--- (iii)$

Multiplying (ii) by 3, we get:

$\rm: \longmapsto 9y - 12x = 0 --- (iv)$

Adding equations (iii) and (iv), we get:

$\rm: \longmapsto25y = 4$

$\rm: \longmapsto y =\dfrac{4}{25}$

From (ii), we get:

$\rm: \longmapsto 3y - 4x = 0$

$\rm: \longmapsto 3y = 4x$

$\rm: \longmapsto x = \dfrac{3}{4} y$

$\rm: \longmapsto x = \dfrac{3}{4} \times \dfrac{4}{25}$

$\rm: \longmapsto x = \dfrac{3}{25}$

Therefore:

$\rm: \longmapsto (x,y)= \bigg( \dfrac{3}{25}, \dfrac{4}{25} \bigg)$

★ Which is our required answer.

$\textsf{\large{\underline{More To Know}:}}$

$\rm1.\ i^{4n} = 1$

$\rm2. \ i^{4n+1} = i$

$\rm3.\ i^{4n+2} = -1$

$\rm4.\ i^{4n+3} = -i$

4 0

3 years ago

You used 5 cups of flour to bake 80 cookies. How many cups of flour do you need if you bake 144 cookies?

Veronika [31]

Answer:

9 cups

Step-by-step explanation:

We can write a ratio to solve

5 cups x cups

------------ = ----------------

80 cookies 144 cookies

Using cross products

5 * 144 = 80x

720 = 80x

Divide by 80

720/80 = 80x/80

9=x

6 0

2 years ago

Read 2 more answers