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3 years ago

Solve the photo. ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

Mathematics

1 answer:

Sophie [7]3 years ago

5 0

Answer:

19.4

Step-by-step explanation:

I haven't done this type of equation in awhile but I believe you can multiply 8 and 17 then divide it by 7 to find the missing number. It might be correct but I am not 100% sure.

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Are triangles DEF and LNM similar if LN equals 4, MN equals 3, DE equals 12, and FE equals 9?

nordsb [41]

Answer:

Step-by-step explanation:

DE corrsponding to the LN, EF corrsponding to the MN, and LN:DE=MN:FE=3

and angel N is corrsponding to the angle E,so it 's SAS.

6 0

3 years ago

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The length of a rectangular piece of land is 9 cm more than 3 times its width. The perimeter is 418 cm. Find its dimensions.

SashulF [63]

Let w represent the width of the rectangle in cm. Then its length in cm is (3w+9). The perimeter is the sum of two lengths and two widths, so is ...

... 418 = 2(w + (3w+9))

... 209 = 4w +9 . . . . . . divide by 2, collect terms

... 200 = 4w . . . . . . . . subtract 9

... 50 = w . . . . . . . . . . divide by 4

... length = 3w+9 = 3·50 +9 = 159

The dimensions of this piece of land are 159 cm by 50 cm.

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3 years ago

Write the equation of the line that goes through (-2, 0) and (4,3).

Snezhnost [94]

Answer:

Step-by-step explanation:

I just put in in the desmos graphing calculator

8 0

3 years ago

In ΔLMN, the measure of ∠N=90°, the measure of ∠M=17°, and MN = 20 feet. Find the length of LM to the nearest tenth of a foot.

andrey2020 [161]

20.9 ft
This is a right triangle trigonometry question because N is 90 degrees. MN is adjacent to M and LM is the hypotenuse. Adjacent any hypotenuse use the cosine function.
$cos \theta = \frac{adj}{hyp}$
plug in known values
$cos(17) = \frac{20}{x}$
switch cos(20) and x using the products property
$x = \frac{20}{cos(17)}$
plug into calculator to get 20.9 ft

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3 years ago

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you are asked to draw a triangle with side lengths of 3 inches, 4 inches and 1 inch. how many triangles can you make like this??

Mandarinka [93]

No, this would not make a triangle because there is a rule that any two sides of a triangle of added together must be larger than the one that is left over.

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3 years ago

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