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storchak [24]
3 years ago
11

The ratio of the measures of the size of a triangle is 6:7:9 and it's perimeter is 77 cm find the measure of each side of the tr

iangle
Mathematics
1 answer:
ser-zykov [4K]3 years ago
7 0

Answer:

21 CM

24.5 cm

31.5 cm

Step-by-step explanation:

Measure of each side = (ratio of each side / sum of ratios) x perimeter

Sum of ratios = 6 + 7 + 9 = 22

6/22 x 77 = 21 cm

7/22 x 77 = 24.5 cm

9/22 x 77 = 31.5 cm

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2. A certain TV can be purchased from the manufacturer for $160. A certain online retailer has a standard markup of 30%, and a c
Vanyuwa [196]
Price, when purchased online:  1.30($160)
Price, when purchased at superstore:  1.40($160)

Difference in prices:  1.40($160) - 1.30($160) = 0.10($160) = $16

A higher markup brings a higher retail price.
8 0
3 years ago
HELP NOWW!!!<br> PLSS I NEED HELP RIGHT NOWWW!!<br> PLS HELP
NemiM [27]

Answer:

x = 55

Step-by-step explanation:

Draw a line parallel to the top and bottom parallel lines so this new line goes through the pointed end of x.

Draw another line parallel to the top and bottom lines through the pointy end of 45.

The bottom angle of the line through 45 is 15 degrees (alternate interior angles.

The top angle is 45 - 15 = 30

The bottom angle of the line going to x is 150 degrees. It and the 30 degree angle make 180. 30 + 150 = 180

One final observation The top angle of made by the line going through x is 180 - 25 = 155

What you have now is

155 + 150 + x = 360

305 + x = 360

x = 360 - 305

x = 55

6 0
3 years ago
Read 2 more answers
Write the equation of a parabola whose focus is at (-7, 3) and whose directrix is the line x = -3.
Sav [38]

Check the picture below.

now, let's keep in mind that, the vertex is half-way between the focus point and the directrix, it's a "p" distance from each other.

since this horizontal parabola is opening to the left-hand-side, "p" is negative, notice in the picture, "p" is 2 units, and since it's negative, p = -2.

its vertex is half-way between those two guys, so that puts the vertex at (-5, 3)

\bf \textit{parabola vertex form with focus point distance} \\\\ \begin{array}{llll} 4p(x- h)=(y- k)^2 \\\\ 4p(y- k)=(x- h)^2 \end{array} \qquad \begin{array}{llll} vertex\ ( h, k)\\\\ p=\textit{distance from vertex to }\\ \qquad \textit{ focus or directrix} \end{array} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \begin{cases} h=-5\\ k=7\\ p=-2 \end{cases}\implies 4(-2)[x-(-5)]=[y-7]^2 \\\\\\ -8(x+5)=(y-7)^2\implies x+5=\cfrac{(y-7)^2}{-8}\implies \boxed{x=-\cfrac{1}{8}(y-7)^2-5}

7 0
4 years ago
Sadie and Connor both play soccer. Sadie scored 3 times as many goals as Connor. Together they scored 12 goals. Create and solve
Anastasy [175]

Answer:No

Step-by-step explanation:

Since Sadie scored 3 times more than Conner and it says can Conner score 4,well 3 x 4 is already 12 which is Sadies number not even counting Conners so no,Conner could have not.

Even though you don’t need to I‘ll just tell you what Conner scored,it is 3 since Sadie is 3 times more than Conner ,that’s 3 x 3 which is 9 then plus Conners 3 goals add together which is 12

Hope this helped!

If you are reading this hope you have a wonderful day and may your dreams come true!

8 0
3 years ago
PLEASE HELP FAST! 20 POINTS!!!
Sedbober [7]

Answer:

27%

Step-by-step explanation:

3/11 = 0.27272727

so about 27%

3 0
3 years ago
Read 2 more answers
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