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2 years ago

7

Question 1 (short fill-in)

2 answers:

goldfiish [28.3K]2 years ago

6 0

Using PEMDAS, u know to multiply 4 by 9 first which results in 45. Now comes adding or subtracting. We must work from left to right, therefore we add 45 and 6 first. U get 39 if u do the math. Then we must subtract 3 from 39 so ur answer should be 36.

12345 [234]2 years ago

4 0

You would use PEMDAS (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction). This means you would use multiplication first because it is before addition or subtraction. That means you would do 4*9 = 36. So now you have 36 + 6 - 3. Since the next step is adding, add 6 to 36, and you will get 42. Then subtract 3 from 42 to get your final answer of 39. Hope this helps. Let me know if you don't understand something, and feel free to ask more questions.

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A. 12 + 4x = 6x + 10 – 2x

GalinKa [24]

An equation has infinitely many solutions if it can be manipulated all the way to an identity (i.e. an equality where the right and left hand side are the same). We have:

A) $12+4x=6x+10-2x \iff 12+4x=10+4x \iff 12=10$

which is impossible

B) $5x+14-4x=23+x-9 \iff x+14 = x+14$

which is an equality

C) $x+9-0.8x=5.2x+17-8\iff 0.2x+9=5.2x+9 \iff 0.2x=5.2x\iff x=0$

which has a unique solution

D) $4x-2x=20 \iff 2x=20 \iff x=10$

which has a unique solution

3 0

3 years ago

A student uses a solution that contains 16 grams of water to conduct an evaporation experiment. At the end of one hour, the am

yanalaym [24]

Answer:

3.5% decrease means 96.5% remaining

0.965(16)

4.25% decrease means 95.75% remaining

0.9575(0.965(16))

= 14.7838 grams

5 0

2 years ago

Read 2 more answers

Write each fraction or mixed number as a number as a decimal 2 3/8

weeeeeb [17]

Answer:

$\tt2.375$

Step-by-step explanation:

$\tt = 2 \frac{3}{8}$

$\tt = \frac{8 \times 2 + 3}{8}$

$\tt = \frac{19}{8}$

$\tt = 19 \div 8$

$\tt = 2.375$

3 0

2 years ago

For which equations is 8 a solution? Select the four correct answer

maxonik [38]

Answer:

I <em>believe</em> the answers are= 2, 3, 6, 8

Step-by-step explanation:

For #2, you would subtract 2 from both sides. 10-2=8. x=8.

For #3, you would add 4 to both sides of the equation, making the final answer: x=8

For #6, you would divide both sides by 3. 24 divided by three is 8.

For #8, I multiplied the whole equation by 8, which is the denominator of x/8. 1 times 8=8. The final answer would be x=8.

Hope this helps!

8 0

2 years ago

Read 2 more answers

Aaron makes numbers with cards he uses all three cards one card has a 3 on it another card has a 6 on it and the last card has a

ikadub [295]

Six plus three is nine, thus the lowest answer.

7 0

3 years ago