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4 years ago

I need help ? How can I solve this ?

Mathematics

1 answer:

valkas [14]4 years ago

6 0

Set an equation equal to 180° with angles A,B and C

140x-14+29-2x+9+x=180

Then combine like terms

39x+24=180

Subtract 24 from 180

39x=156

Divide by 39

x=4

Plug in 4 for x in the equations of angles A, B, and C

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Is the ratio 4 to 7 the same as 7 to 4 ?

Olin [163]

Answer:

uhhhhh Expressed as a fraction, with the numerator equal to the first quantity and the denominator equal to the second, the answer would be 7/4. Two other ways of writing the ratio are 7 to 4, and 7:4.

Step-by-step explanation:

just math

5 0

3 years ago

Read 2 more answers

Explain the best you can because I’m struggling :)

Zigmanuir [339]

Step-by-step explanation:

A. 3x+4/2 = 9.5

3x + 4/2 = 9.5........criss cross

3x+4= 9.5×2

3x = 19-4

3x = 15

x=5 ..........divide both sides by 3

B. 7+ 2x/3= 5.......criss cross

7+2x = 5 × 3

7 + 2x = 15

2x = 15-7

2x = 8......divide both sides by 2

x = 4

8 0

3 years ago

Which data set represents the histogram?

OverLord2011 [107]

The answer is: [C]: " {56, 66, 71, 78, 57, 53, 69, 68, 70, 60, 59, 55} " .
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5 0

3 years ago

In a contest to guess the number of jelly beans in a jar, Alice guessed 25;Betty, 18;Clare,23;Dotty,19;Edith,24;and Fran,17. Two

vampirchik [111]

Answer:

There are 21 jelly beans in the jar.

Step-by-step explanation:

Suppose, the number of jelly beans in the jar is $x$

Two were off by 2, two were off by 3, two were off by 4. That means, the six guessed number will be: $(x+2), (x-2), (x+3), (x-3), (x+4), (x-4)$

Given that, Alice guessed 25; Betty, 18; Clare, 23; Dotty, 19; Edith, 24; and Fran, 17.

So, the sum of all six guessed number will be: $25+18+23+19+24+17=126$

Thus, the equation will be..........

$(x+2)+(x-2)+(x+3)+(x-3)+(x+4)+(x-4)= 126\\ \\ 6x= 126\\ \\ x=\frac{126}{6}=21$

So, the number of jelly beans in the jar is 21.

5 0

3 years ago

Lusia tiene $500, decide gastar el 15% de esta cantidad en la compra de un postre para despues de la comida

Morgarella [4.7K]

Answer:

Gasto en postre= $75

Step-by-step explanation:

Dada la siguiente información:

Lusia tiene $500, decide gastar el 15% de esta cantidad en la compra de un postre para despues de la comida.

Para calcular la cantidad a gastar en el postre, debemos usar la siguiente formula:

Gasto en postre= presupuesto total*porcentaje para postre

Gasto en postre= 500*0.15

Gasto en postre= $75

6 0

3 years ago