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Marat540 [252]
3 years ago
14

1. Identify the place value for the following: 162.891

Mathematics
1 answer:
Advocard [28]3 years ago
7 0

Answer:

Hundreds : 1

Tens : 6

Ones : 2

.

Tenths : 8

Hundredths : 9

Thousandths : 1

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Which equation does this image represent?
nirvana33 [79]

Given:

Image of the ellipse

To find:

The equation of the image

Solution:

The given image is a ellipse.

Center of the ellipse = (0, 0)

x-axis points are (-3, 0) and (3, 0).

y-axis points are (2, 0) and (-2, 0).

Standard form of equation of ellipse:

$\frac{(x-h)^{2}}{a^{2}}+\frac{(y-k)^{2}}{b^{2}}=1

where (h, k) is the center = (0,0)

a is the point on x-axis where y = 0. Hence a = 3.

b is the point on y-axis where x = 0. Hence b = 2.

Substitute this in the standard form of ellipse.

$\frac{(x-0)^{2}}{3^{2}}+\frac{(y-0)^{2}}{2^{2}}=1

$\frac{x^{2}}{9}+\frac{y^{2}}{4}=1

To make the denominator same multiply 1st term by \frac{4}{4} and 2nd term by \frac{9}{9}.

$\frac{4x^{2}}{4\times9}+\frac{9y^{2}}{9\times4}=1

$\frac{4x^{2}}{36}+\frac{9y^{2}}{36}=1

$\frac{4x^{2}+9y^{2}}{36}=1

Multiply by 36 on both sides

$\frac{4x^{2}+9y^{2}}{36}\times 36=1\times 36

${4x^{2}+9y^{2}}={36}

The equation of the image is ${4x^{2}+9y^{2}}={36}.

8 0
4 years ago
I don't get the question ¯\(°_o)/¯
FrozenT [24]

Answer:

the correct answer is the first option

Step-by-step explanation:

you just need to put the numbers from highest to lowest

dead sea = 1312

lake assal =512

death valley = 282

valdes peninsula = 131

caspian sea = 92

plz mark me as brainliest :)

3 0
3 years ago
-(2.6m +5)<br> Please help me
Zinaida [17]

Answer:

<h3>                -2.6m - 5</h3>

Step-by-step explanation:

-(2.6m + 5) = -1(2.6m + 5) = -1•2.6m +(-1)•5 = -2.6m - 5

7 0
3 years ago
A store sells gift cards in preset amounts.You can purchase gift cards for $10 or $25. You have spent $285 on gift cards. Erie a
pav-90 [236]

Answer:

10x + 25y = 285

One $25 gift cards with 26, $10 gift cards.

Three $25 gift cards with 21, $10 gift cards and

Five $25 gift cards with 16, $10 gift cards.

Step-by-step explanation:

I can purchase gift cards for $10 or $25. I have spent $285 on gift cards.

If I have purchased x number of $10 gift cards and y number of $25 gift cards then the equation that models the situation in standard form will be given by

10x + 25y = 285 .......... (1)

Now, for y = 1, x = 26

For, y = 3, x = 21

For, y = 5, x = 16

So, here are the three combinations of gift cards that I could have purchased.

One $25 gift card with 26, $10 gift cards.

Three $25 gift cards with 21, $10 gift cards and

Five $25 gift cards with 16, $10 gift cards. (Answer)

8 0
3 years ago
What percent of 700 is 364
viktelen [127]

Answer:

52%

Step-by-step explanation:

6 0
3 years ago
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