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marta [7]
3 years ago
7

Helpp! Evaluate the expression and enter your answer below. 42-13

Mathematics
1 answer:
Andrews [41]3 years ago
5 0
Answer - 3

In order to do this equation you would follow PEMDAS. Being as there isn’t any parentheses, multiplication, or division involved, we only need step E ( exponents) and step S ( subtraction). In the acronym, E comes before S so we multiple 4 * 4 ( if you did not know: the exponent of 2 means you would multiply the number with itself.) 4 * 4 equals 16. The equation is now 16- 13. When you subtract the two, the product is 3.
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The answer to this problem
Ksivusya [100]

Answer:

B. \frac{7\sqrt{2}}{34}

Step-by-step explanation:

Cos θ = Adjacent/hypotenuse

Adjacent = 7

Hypotenuse = √(23² + 7²) = √578 = 17√2

Thus:

Cos θ = \frac{7}{17\sqrt{2}}

Rationalize

Cos θ = \frac{7*\sqrt{2}}{17\sqrt{2}*\sqrt{2}}

Cos θ = \frac{7\sqrt{2}}{17*2}

Cos θ = \frac{7\sqrt{2}}{34}

8 0
3 years ago
Highlight all multiple of 5
Katen [24]
Are their answer choices? There are infinitely many multiples of 5.
5, 10, 15, 20, 25, 30, 45, 50, 55, etc
5 0
3 years ago
Find the quadratic function that has the vertex (4,5) and passes through the point (8,21) If possible, can you explain the work?
Ganezh [65]
Start by looking at the vertex form of a quadratic function, f(x) = a(x - h)^2 + k. The variables h and k are the values of the vertex. Plug those in to get f(x) = a(x - 4)^2 + 5. To find the variable a, plug in the point given for the x and y values. So, you get (21) = a((8) - 4)^2 + 5. Solve for a algebraically, and you get a = 1. Finally, plug everything in and simplify the equation. You should get that the quadratic function is f(x) = x^2 - 8x + 21. Hope this helps!

8 0
4 years ago
The diagram shows a scale drawing of a rectangular banner with a scale of 1:30. Calculate
AlexFokin [52]

Answer:

Part 1) The actual length of the banner is 1.2\ m

Part 2) The area of the banner is 3.24\ m^{2}

Step-by-step explanation:

we know that

The scale of the drawing is \frac{1}{30}

That means ----> 1 cm on the drawing represent 30 cm in the actual

Using proportion

<em>Find out the actual dimensions of the banner</em>

Let

L  the actual length of the banner

W the actual width of the banner

<u>For a length of 4 cm in the drawing</u>

\frac{1}{30}=\frac{4}{L}\\ \\ L=30*4\\ \\L=120\ cm

Convert the actual length to meters

L=120/100=1.2\ m

<u>For a width of 9 cm in the drawing</u>

\frac{1}{30}=\frac{9}{W}\\ \\ W=30*9\\ \\W=270\ cm

Convert the actual width to meters

W=270/100=2.7\ m

<em>Find the area of the banner</em>

A=1.2*2.7=3.24\ m^{2}

5 0
3 years ago
WILL GIVE BRAINLIEST!!!<br><br> x=<br><br> 27<br> 54<br> 61
murzikaleks [220]

Answer:

27 is the value of x.sorry it is hard to described without name

4 0
3 years ago
Read 2 more answers
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