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3 years ago

Easy, need help, thanks.

Mathematics

2 answers:

TEA [102]3 years ago

5 0

Answer:

A. 35 deg

Step-by-step explanation:

The triangles are congruent bu HL.

m<RCD = m<PCD = 35 deg

elixir [45]3 years ago

4 0

35 degrees is the answer

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Factorize 3a⁴+18a²-21-2b-3b²

Gnom [1K]

Answer:

the expression is not factorable with rational numbers.

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3 years ago

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X^2+16x+64 can anyone show the work for this and find the factor.

Alexandra [31]

Answer:

should i simplify it? or factorise it?

I guess its factorise! So i m factorising!

x^2+16+64

(x)^2+2×x×8+(8)^2

(x+8)^2

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3 years ago

49767269 x 327686000 - 1029 + 1101 / 32

mars1129 [50]

Answer:

$16308037309533006\frac{13}{32}$

Step-by-step explanation:

49767269 × 327686000 - 1029 + $\frac{1101}{32}$

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= $16308037309533006\frac{13}{32}$

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3 years ago

In a class of 23 student the girls were 7 more than the boys how many boys were in the class

Softa [21]

Answer:

x=# of boys

x+7=# of girls

x+x+7=25

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2x=25-7

2x=18

x=18/2

x=9 boys

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If you don't understand variables use trial and error.

Boys Girls

1 8

2 9

3 10

4 11

5 12

6 13

7 14

8 15

9 16 9+16=25 students

You could start this way...

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12 13

11 14

10 15

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3 years ago

Which number can each term of the equation be multiplied by to eliminate the decimals before solving?

Sati [7]

Ok...

5.6 = 56/10 = 560/100

1.1 = 11/10 = 110/100

0.12 = 12/100

--------------

$\frac { 560 }{ 100 } j-\frac { 12 }{ 100 } =4+\frac { 110 }{ 100 } j\\ \\ \\ 100\times \left( \frac { 560 }{ 100 } j-\frac { 12 }{ 100 } \right) =\left( 4+\frac { 110 }{ 100 } j \right) \times 100\\ \\ 560j-12=400+110j\\ \\ 560j-110j=400+12\\ \\ 450j=412\\ \\ j=\frac { 412 }{ 450 }$

So, the answer is: 100

You could multiply both sides of the equation by 100 to get the value of (j) quickly.

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3 years ago

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