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salantis [7]
3 years ago
12

Jim nasium is building a tree house for histwo daughters. He cuts 12 pieces of wood from a board that is 128 inches long.He cuts

5 pieces that measure 15.75 inches each and7 pieces evenly cut from what is left.Jim calculates that,due to thewidth of his cuttingblade, he will lose a total of 2 inches of wood after making all of the cuts. What is the length of each of the seven pieces
Mathematics
1 answer:
AnnyKZ [126]3 years ago
5 0

Answer:

6.75 inches each

Step-by-step explanation:

128 less 2 inches for the cuttingblade

5 x 15.75 = 78.75

126 - 78.75 =47.25

47.25/7 = 6.75

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qwelly [4]
28% of 1500 is 420.

so add it to 1500 and you’ll get 1920
7 0
3 years ago
Does x=0 I need this for a math test I just need a yes or no
Fynjy0 [20]

Answer:

no

Step-by-step explanation:

:)

6 0
3 years ago
A triangle has sides with lengths of 8 millimeters, 15 millimeters, and 17 millimeters. Is it a right triangle?
olga nikolaevna [1]

Answer:

yes.

Step-by-step explanation:

to find this answer, use the pythagoras theorem. the pythagoras theorem states that a² + b² = c².

to see if this is a right angled triangle, we will use this formula, as the pythagoras theorem only works for right angled triangles.

we are going to work out c, which is always the hypotenuse. the hypotenuse is the longest side of a triangle, that is larger than the other values. we know that the hypotenuse of this triangle is 17, so let’s see if that’s the answer we get.

calculation:

a² + b² = c²

a = 8 millimetres

b = 15 millilitres

c = ?

8² + 15² = c²

64 + 225 = c²

64 + 225 = 289.

289 = c²

√289 = c

√289 = 17.

the pythagoras theorem correctly identified the length of the hypothenuse. as i said earlier, this theorem only works on right angled triangles, therefore, this triangle is right angled.

6 0
3 years ago
What are the excluded values of x for x^2-9x/ x^2 -7x-18
miv72 [106K]

Answer:

3rd option

Step-by-step explanation:

the denominator cannot be zero as this would make the expression undefined.

equating the denominator to zero and solving gives the values that x cannot be.

x² - 7x - 18 = 0 ← in standard form

(x - 9)(x + 2) = 0 ← in factored form

equate each factor to zero and solve for x

x - 9 = 0 ⇒ x = 9

x + 2 = 0 ⇒ x = - 2

then

x = - 2, x = 9 ← are the excluded values

5 0
2 years ago
Pls help best answer gets brainest
sashaice [31]

Answer:

0.6

Step-by-step explanation:

Positive is right and Negative is left. Move from 0 right to 1.4 and then move left 0.8 units to end up at 0.6

6 0
3 years ago
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