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kramer
4 years ago
8

Multiply.

Mathematics
2 answers:
Vikki [24]4 years ago
7 0

Answer:

its B

Step-by-step explanation:

i took the test the answer is B

please give me brainly

Rus_ich [418]4 years ago
3 0

(6x² - 4x - 5)(2x² + 3x)

= 12x⁴ + 18x³ - 8x³ - 12x² - 10x² - 15x

= 12x⁴ + 10x³ - 22x² - 15x

so the answer is B

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Two quantities, x and y, are directly proportional. If x is tripled, what happens to y? It is multiplied by 13. It is tripled. I
prisoha [69]
Answer: It is tripled.

Since x and y are proportional, whatever happens to x must happen to y in order for the two values to stay proportional.
7 0
3 years ago
Read 2 more answers
Kaya devoted 2/5 of her study time to mathematics, 3/20 of her time to social studies, 1/3 of her time to chemistry and the rema
andrezito [222]

Answer:

  54 minutes

Step-by-step explanation:

The sum of fractions is ...

  2/5 + 3/20 + 1/3 = 11/20 +1/3 = (3·11 + 20·1)/(20·3) = 53/60

Then the 42 minutes devoted to English represents 1 - 53/60 = 7/60 of her study time.

Kaya's social studies time is 3/20 = 9/60 of her total, so the ratio of SS to Eng is ...

  SS : Eng = (9/60) : (7/60) = 9 : 7

When we multiply the numbers in this ratio by 6, we find ...

  SS : Eng = 54 : 42

Kaya spent 54 minutes studying social studies.

5 0
3 years ago
Sin x cos x = -cos x<br> Find all angles that satisfy the equation below
n200080 [17]

Answer:

x=90^\circ,270^\circ

Step-by-step explanation:

sinxcosx=-cosx

sinxcosx+cosx=0

cosx(sinx+1)=0

cosx=0

x=90,270

sinx+1=0

sinx=-1

x=270

Therefore, the angles that satisfy the equation are x=90^\circ,270^\circ

8 0
3 years ago
Solve for x in the equation x2-4x-9=29
Citrus2011 [14]
Hello! And thank you for your question!

First move all the terms to one side:

<span>x^<span><span>​2</span><span>​​</span></span></span>−4x−9−29=<span>0
</span>
Then simplify x^​2​​−4x−9−29:

<span><span><span>x<span><span>​^2</span><span>​​</span></span></span>−4x−38=0</span><span>
Then use the quadratic formula:

x = 4 + 2</span>√42 over 2 , 4 - 2√42 over 2

Finally simplify:

x = 2 + √42, 2 - √42

Final Answer:

x = 2 + √42, 2 - √42
</span>
3 0
3 years ago
Read 2 more answers
7&lt;4q-9 ALGEBRA:) Need help Please! Gracias!!
Vanyuwa [196]

Answer:

q > 4

Step-by-step explanation:

Step 1: Write inequality

7 < 4q - 9

Step 2: Solve for <em>q</em>

<u>Add 9 to both sides:</u> 16 < 4q

<u>Divide both sides by 4:</u> 4 < q

Here, we can see that any number greater than 4 will work. So even 23573489079357 would work, as long as it is greater than 4.

6 0
3 years ago
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