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Delvig [45]
3 years ago
7

HELP PLEASE!!! WILL CROWN BRAINLIEST....

Mathematics
1 answer:
Rasek [7]3 years ago
4 0

Answer: - 17 C

Step-by-step explanation: 7 - 8 is negative 1 and twice as much of 8 is 16. -1 minus 16 is negative 17 (-17).

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In the figure, YX is a tangent to circle O at point X.
Andre45 [30]

Answer:

the answer is 26 degrees

Just took the quiz awhile ago :)

4 0
3 years ago
Read 2 more answers
Find the area and the circumference of a circle with diameter 4 yd.
MAVERICK [17]

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

C≈12.57 yd

A≈12.57 yd²

4 0
3 years ago
How many 4-digit multiples of 21 and 15 are there and 4-digit multiples of either 21 or 15 are there?
salantis [7]

Answer:

943

Step-by-step explanation:

21| 1000

   | ----------

       47 | 13

21-13=8

1000+8=1008

21|9999

  |---------

     476|3

9999-3=9996

1008,1029,...,9996

let n be number of terms

a=1008,d=21,l=9996

9996=1008+(n-1)21

9996-1008=(n-1)21

8988=(n-1)21

n-1=8988/21

n-1=428

n=428+1=429

again 15|1000

            |---------

                66|10

15-10=5

1000+5=1005

15|9999

  | ---------

      666|9

9999-9=9990

1005,1020,...,9990

a=1005,d=15,l=9990

let n be number of terms.

9990=1005+(n-1)15

9990-1005=(n-1)15

8985=(n-1)15

n-1=8985/15

n-1=599

n=599+1=600

21=3×7

15=3×5

L.C.M.=3×5×7=105

105)1000(9

      -945

     ____

         55

105-55=50

1000+50=1050

105)9999(

     -945

   ---------

         549

       - 525

        -------

            24

        -------

9999-24=9975

1050,1155,...,9975

let n be number of terms.

d=105

l=a+(n-1)d

9975=1050+(n-1)105

9975-1050=(n-1)105

8025=(n-1)105

n-1=8925/105

n-1=85

n=85+1=86

so there are 86 multiples of 21 and 15

(A∪B)=A+B-(A∩B)

multiples of 21 or 15=429+600-86=1029-86=943

4 0
3 years ago
How do I solve for x??
ser-zykov [4K]

Answer: x = 20

Step-by-step explanation:

A right angle adds up to 90 degrees. Therefore, the sum of all the angle values must equal 90

x + 2x + x + 10 = 90

4x + 10 = 90

4x = 80

x = 20

4 0
3 years ago
Select the correct answer.<br> The given equation has been solved in the table.
Ilya [14]

Answer:

D.  The subtraction property of equality was not applied to solve this equation.

Step-by-step explanation:

<u>Step 1</u>:  Given

\sf \dfrac{x}{2}-7=-7

<u>Step 2</u>:  Addition Property of Equality

(add 7 to both sides)

\implies \sf \dfrac{x}{2}-7+7=-7+7

<u>Step 3</u>:  Simplify

\implies \sf \dfrac{x}{2}=0

<u>Step 4</u>:  Multiplication Property of Equality

(multiply both sides by 2)

\implies \sf 2 \cdot \dfrac{x}{2}=2 \cdot0

<u>Step 5</u>:  Simplify

\implies \sf x=0

7 0
2 years ago
Read 2 more answers
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