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Gemiola [76]
4 years ago
11

Evaluate 3x−4 when x=7.

Mathematics
2 answers:
Free_Kalibri [48]4 years ago
8 0

Answer:

17

Step-by-step explanation:

3(7)-4=17

Goshia [24]4 years ago
4 0

Answer:

It is 17

Step-by-step explanation:

Simplify the expression.

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Pleasseee help me with this.it’s life or death
barxatty [35]

Answer:

(a) 4 miles

(b) 8.9 miles

Step-by-step explanation:

(a) Theorem 1: In a right triangle, the altitude drawn from the right angle to the hypotenuse divides the hypotenuse into two segments. The length of the altitude is the geometric mean of these two segments.

Hence, the distance d between the park and the library is

d^2=2\cdot 8\\ \\d^2=16\\ \\d=4\ miles

(b) Theorem 2: In a right triangle, the altitude drawn from the right angle to the hypotenuse divides the hypotenuse into two segments. The length of each leg of the right triangle is the geometric mean of the lengths of the hypotenuse and the segment of the hypotenuse that is adjacent to the leg.

Thus, the distance D between the park and the football field is

D^2=8\cdot (2+8)\\ \\D^2=8\cdot 10\\ \\D^2=80\\ \\D=\sqrt{80}=4\sqrt{5}\approx 8.9\ miles

4 0
3 years ago
A square is put together by two triangles. The hypotenuse is 11 cm and width of 8 cm. find the height of triangle?
Aleks [24]
You can use the pythagorean theorem. Make sure that you put the measurements in the right places though. Since 11 is the measure of the hypotenuse, 11 has to be c. When you plug in the information that you have, it should look like this:
8^2 + b^2 = 11^2

Square 8 and 11. 
64 + b^2 = 121

Subtract 64 from 121
121 - 64 = 57

The new equation is:
b^2 = 57

Now take the square root of both sides to get b by itself. 
b = about 7.5

Answer: The height of the triangle is 7.5

***** Note: I rounded the answer ********************************************
4 0
3 years ago
-36 4/9 - (-10 2/9) -(18 2/9)
Degger [83]

Answer: -44\dfrac{4}{9}

Step-by-step explanation:

The given expression: -36\dfrac{4}{9}-(-10\dfrac{2}{9})-(18\dfrac{2}{9})

Here, 36\dfrac{4}{9}=\dfrac{36\times9+4}{9}=\dfrac{328}{9}

(10\dfrac{2}{9})=\dfrac{92}{9}\\\\(18\dfrac{2}{9})=\dfrac{9\times18+2}{9}=\dfrac{164}{9}

That is

-36(\dfrac{4}{9})-(-10\dfrac{2}{9})-(18\dfrac{2}{9}) = -\dfrac{328}{9}-(-\dfrac{92}{9})-\dfrac{164}{9}\\\\=-\dfrac{328}{9}+\dfrac{92}{9}-\dfrac{164}{9}\\\\=\dfrac{-328+92-164}{9}\\\\=\dfrac{-400}{9}\\\\=-44\dfrac{4}{9}

8 0
4 years ago
PLSSSS HELP ASAP!! GIVING BRAINLIEST!! Pls Explain :)
Andreas93 [3]

Answer: 221.10

Step-by-step explanation:

5 0
3 years ago
I need help on this darn dang question "The streets of Millston are laid out like a grid, with each square being the same size.
Komok [63]

Answer:

Each block is 1/8 of a mile long.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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