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timurjin [86]
4 years ago
12

Simplify: (16x5 + 8y2) – 7x5

Mathematics
2 answers:
Svet_ta [14]4 years ago
8 0
Assuming 7x5 and 16x5 mean to the power of 5... (9x^5 + 8y^2)
notsponge [240]4 years ago
5 0
<span>Equation at the end of step  1  :</span><span><span> ((16•(x5))+(8•(y2)))-7x5 </span><span> Step  2  :</span></span><span>Equation at the end of step  2  :</span><span><span> ((16 • (x5)) + 23y2) - 7x5 </span><span> Step  3  :</span></span><span>Equation at the end of step  3  :</span><span> (24x5 + 23y2) - 7x5 </span><span> Step  4  :</span>Final result :<span><span> 9x5 + 8y2 </span>cv
</span>
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I’m pretty sure it’s a Rectangle or square
5 0
3 years ago
Write and solve an equation.
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5 0
4 years ago
Read 2 more answers
Given tan θ = 2 and sin θ &lt; 0. Find cos(θ +pi/4)
Lera25 [3.4K]

Answer:

√10 / 10

Step-by-step explanation:

tan θ > 0 and sin θ < 0, so θ is in quadrant III.  That means cos θ < 0.

cos(θ + π/4)

Use angle sum formula.

cos θ cos(π/4) − sin θ sin(π/4)

½√2 cos θ − ½√2 sin θ

Factor.

½√2 cos θ (1 − tan θ)

½√2 cos θ (1 − 2)

-½√2 cos θ

Write in terms of secant.

-½√2 / sec θ

Use Pythagorean identity (remember that cos θ < 0).

-½√2 / -√(1 + tan²θ)

-½√2 / -√(1 + 2²)

½√2 / √5

√10 / 10

5 0
3 years ago
Your grades on three exams are 80, 93, and 91. What grade do you need on the next exam to have an average of 90 on the four exam
Pani-rosa [81]

<u>Answer:</u>

96

<u>Step-by-step explanation:</u>

Let's assume that the marks needed in the next exam is x. Then if the average becomes 90,

\frac{80 + 93 + 91 + x}{4}= 90

Now we can simply solve for x:

⇒ \frac{264 + x}{4}= 90

⇒ 264 + x = 360            [Multiplying both sides by 4]

⇒ x = 360 - 264            [Subtracting 264 from both sides]

⇒ x = \bf96

Therefore, you need to score 96 in your next exam to have an average of 90 on the four exams.

8 0
2 years ago
Hi I need help lol ​
yKpoI14uk [10]

Answer: 105 degrees

Step-by-step explanation:

so, since it is a parallelogram, adjacent angles are equal. so, we know that angle S and angle U are equal. that means we can subtract 150 from the 360 degrees of the full parallelogram. so, that leaves 210 degrees to work with. since it is shared amongst the other two equal angles, we just divide it by 2. so, that's how we get the answer.

6 0
3 years ago
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