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Strike441 [17]
3 years ago
13

I will make you brainliest pls help me

Mathematics
1 answer:
Licemer1 [7]3 years ago
4 0

1) 8

2) 6(5x+2y) factor out greatest common factor

3) 10.8 just move over decimal two places to the left.

4) 30t=150? Then t=5kg Im not sure what the last one is asking, but I’m assuming it’s to solve for t.

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The shorter sides of an acute triangle are x cm and 2x cm. The longest side of the triangle is 15 cm. What is the smallest possi
Veronika [31]

The longest side in the triangle is opposite to the largest angle of this triangle. If triangle is acute, then all angles are acute. Acute angle has cosine that is positive.

Use cosine theorem to determine the cosine of the largest angle:

15^2=x^2+(2x)^2-2\cdot x\cdot 2x\cdot \cos \alpha, where \alpha is the largest angle.

Then

225=x^2+4x^2-4x^2\cos \alpha,\\ \\\cos \alpha=\dfrac{225-5x^2}{-4x^2}=\dfrac{5x^2-225}{4x^2}.

Since \cos \alpha>0, then

\dfrac{5x^2-225}{4x^2}>0\Rightarrow 5x^2-225>0.

Divide this inequality by 5:

x^2-45>0,\\ \\(x-3\sqrt{5})(x+3\sqrt{5})>0,\\ \\x\in (-\infty,-3\sqrt{5})\cup (3\sqrt{5},\infty).

Note that 3\sqrt{5}\approx 6.71, then the smallest possible whole-number value of x is 7.

Answer: correct choice is B

6 0
3 years ago
Read 2 more answers
How many 7/8 inch long strips can be cut from a single 7 inch long strip of material
olga_2 [115]

Answer:

8

Step-by-step explanation:

Let us assume ,

n number of pieces can be obtained.

Each piece is of  7/8  inches

and the total length is   7 inches.

So, we get

\frac{7}{8} * n=7\\

multiplying  by 8

7n=56

dividing by  7

n=\frac{56}{7}

=8

4 0
4 years ago
A grocery store sells 6 ears of corn for $3.54. Which of the fllowing shows how to find the amount of money that each ear of cor
Vlad [161]

Answer: B: 6÷3.54

Step-by-step explanation: Since they sold 6 ears and made $3.54 total, you would have to divide 6 by $3.54 to determine the cost of each ear.

4 0
3 years ago
Solve the following inequality for p. Write your answer in simplest form. -9+5(5p+1)<-9p+8+9
Reptile [31]

My first answer to this question was p<3/34 and I was wrong.

The answer really is p<12/25

Hope this helped God bless you! ❤️

7 0
3 years ago
Add three fractions together and get a whole number
DENIUS [597]

Answer:

1/3 +1/3+1/3

Step-by-step explanation:

Add all three to get a whole.

5 0
3 years ago
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