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3 years ago

Natalie has $4 in her purse. She earns $6 after babysitting her little brother. Natalie

Mathematics

1 answer:

m_a_m_a [10]3 years ago

7 0

Answer:

0 because 4+6-10=0

Step-by-step explanation:

(addition) She starts off with 4 and adds 6 so..

4 + 6 = 10

(Subtraction) Then she buys a book for ten dollars so we subtract or 'take away'

10 - 10 = 0

Therefore, the answer is 0

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What is the equation of the circle whose diameter has endpoints (8,-2) and (-2,6)?

klemol [59]

Answer:

$(x-3)^{2} +(y-2)^{2}=41$

Step-by-step explanation:

step 1

Find the diameter of the circle

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

we have

$A(8,-2)\\E(-2,6)$

substitute the values

$d=\sqrt{(6+2)^{2}+(-2-8)^{2}}$

$d=\sqrt{(8)^{2}+(-10)^{2}}$

$d=\sqrt{164}\ units$

$d=2\sqrt{41}\ units$

step 2

Find the center of the circle

The center is the midpoint of the diameter

The center is equal to

$C=(\frac{8-2}{2},\frac{-2+6}{2})$

$C=(3,2)$

step 3

Find the equation of the circle

The equation of the circle in center radius form is equal to

$(x-h)^{2} +(y-k)^{2}=r^{2}$

we have

(h,k)=(3,2)

$r=2\sqrt{41}/2=\sqrt{41}\ units$ ---> the radius is half the diameter

substitute

$(x-3)^{2} +(y-2)^{2}=(\sqrt{41})^{2}$

$(x-3)^{2} +(y-2)^{2}=41$

4 0

4 years ago

Please help steps thx

ExtremeBDS [4]

Answer:

240 cubic metres

Step-by-step explanation:

I'm not really sure for Q17 but I do know Q18.

Q18. Volume of cuboid = Length×Breadth×Height

=12×4×5

=240 cubic metres

hope it helps!!!

8 0

3 years ago

HeLP ASAP WiLl GiVe bRanIiEst!!!!!

riadik2000 [5.3K]

Step-by-step explanation:

mean = 5+7+7+x /4 = 7

19+x / 4 = 7

19+x = 28

x = 9

6 0

2 years ago

Read 2 more answers

Here are 2 bowls. One of them has 25 gems and the other has 15 gems. Some of them are red.All the gems from the two bowls are no

spin [16.1K]

Answer:

the answer is $\frac{25}{15}\\$ Hope this helps :}

Step-by-step explanation:

Here are 2 bowls. One of them has 25 gems and the other has 15 gems. Some of them are red. All the gems from the two bowls are now put into a third bowl. What fraction of the gems in the third bowl will be red?

7 0

3 years ago

Simplify the following expression<br> 12b+5.54b+2.46b+3.2a+1.17a-2b

alekssr [168]

Answer:

Step-by-step explanation:

1. First you add like terms

12b+5.54b+2.46b-2b = 18b

3.2a+1.17a = 4.37a

2. Now you write it out

18b+4.37a

3. CELEBRATE!!!!

4. Pat yourself on the back one more problem done

5. Have a nice day

6 0

3 years ago