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2 years ago

14

NO LINKS !!!! Giving brainliest. Geometry with triangles word problem.

1 answer:

Novosadov [1.4K]2 years ago

6 0

Answer:

for a, look at my picture

b = 19.5 inches

Step-by-step explanation:

A is simple. thats my take on it, but other people coudl've drawn it differently

B is more difficult. I made triangle QRS like that so i can make a ratio.

My ratio:

QX:QY = QR:QS

8:12=13:QS

13*12 = 8*QS

156/8 = 19.5

therefore 19.5 inches

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A force of $20$ newtons will stretch a spring $5$ centimeters. What is the total number of centimeters that a force of $60$ newt

Aleksandr-060686 [28]

Answer:

Step-by-step explanation:

Hooke's Law applies here, which is a linear relationship. It would be easier to solve this using proportions with N of force on the top and the amount of stretch in cm on the bottom. Set up with our unknown, the number of cm:

$\frac{N}{cm}:\frac{20}{5}=\frac{60}{x}$ and cross multiply:

20x = 300 so

x = 15 cm

6 0

3 years ago

2+3x=-4(5+2x) solve for x, help please

Misha Larkins [42]

Answer:

$x=-2$

Step-by-step explanation:

$2+3x=-4.(5+2x)$

$Expand \: the \: parentheses:$

$2 + 3x = - 4.5 - 4.2x$

$Simplify \: the \: arithmetic:$

$2 + 3x = - 20 - 4.2x$

$Solve \: by \: distributing:$

$2 + 3x = - 20 - 8x$

$Group \: all \: x \: terms \: on \: the \: left \: \\ side \: of \: the \: equation$

$2 + 3x = - 20 - 8x$

$Add \: 8x \: to \: both \: sides:$

$2 + 3x + 8x = - 8x + 8x$

$Simplify \: the \: arithmetic:$

$11x + 2 = - 20 - 8x + 8x$

$Group \: like \: terms:$

$11x + 2 = - 8x + 8x - 20$

$Group \: all \: constants \: on \: the \: right \\ \: side \: of \: the \: equation$

$11x + 2 = - 8x + 8x - 20$

$Subtract \: 2 \: from \: both \: sides:$

$11x + 2 - = - 20 - 2$

$Simplify \: the \: arithmetic:$

$11x = - 20 - 2$

$Simplify \: the \: arithmetic:$

$11x = - 22$

$Isolate \: the \: x$

$11x = - 22$

$Divide \: both \: sides \: by \: 11:$

$\frac{11x}{11} = \frac{ - 22}{11}$

$Simplify \: the \: fraction:$

$x = \frac{ - 22}{11}$

$Find \: the \: greatest \: common \: factor \\ \: of \: the \: numerator \: and \: denominator:$

$x = \frac{ - 2.11}{1.11}$

$Factor \: out \: and \: cancel \: the \: greatest \\ \: common \: factor:$

$x = - 2$

Thanks!!!!!!!

4 0

3 years ago

Read 2 more answers

Which is the best description of andrews error ?

mote1985 [20]

D. He dilated the dimensions by different factors!

7 0

3 years ago

Three boys cut out hundredths decimal models. Luke shades three fourths of one model. Owen shades four small squares of one mode

Ad libitum [116K]

Answer:

Luke = 0.75

Owen = 0.04

Jacob = 2.9

Step-by-step explanation:

A model = 100 small squares

100 small squares = 1

Luke shades three fourths of one model.

Luke = 3/4 of 1 model

= 3/4 × 1

= 0.75

Owen shades four small squares of one model.

Owen = 4/100

= 0.04

Jacob shades two full models and nine tenths of another model

Jacob = 2 + 9/10

= 2 + 0.9

= 2.9

Luke = 0.75

Owen = 0.04

Jacob = 2.9

6 0

3 years ago

7 times a number is 8 less than the square of that number. Find the negative solution.

charle [14.2K]

Answer:

-1

Step-by-step explanation:

The required relation is ...

7n = n^2 -8

0 = n^2 -7n -8 . . . . put in standard form

0 = (n -8)(n +1) . . . . factor

Solutions are n=8 and n=-1.

The negative solution is -1.

7 0

3 years ago