how do you solve SAT practice test #7 section 4 question 26?

# Which of the following statements is true for all real numbers c ? A) 8+c > 4+c B) 8+4c > 4-4c C) 4c > 8c D) 8c > 4c E) 8c^2 > 4c^2

The correct answer is A. Subtract c from both sides of the inequality and you’re left with 8 > 4. That’s always true! from Tumblr https://ift.tt/2Oa6SYI

# If x+y+y=y and y not equal to 0, then x/y =

Rearrange that equation: x + 2y = y x = –y x/y = –1 from Tumblr https://ift.tt/2EP6ejY

# If 3/7 of “n” is 42 what is 5/7 of “n”? How to answer these types of questions

Best way to go if you’re not sure is to solve for n. Now all you need to do is find 5/7 of 98. Another way to go is to recognize that if the denominator of 7 is common to both fractions, all you really need to do is divide by 3 and multiply by (more…)

# Test 8 Section 3 #12

Test 8 Section 3 #12

# Test 6 Section 4 #32

Test 6 Section 4 #32

# For question 13 test 1 no calculator, I used plugging in.

Hi Mike

For question 13 test 1 no calculator, I used plugging in. I made x = 4 and solved to get 42/13. then I plugged 4 into my answer choices and B gave me 42/13.

I am curious as to why you did not use plug in for your answer and explanation.

# Test 3 Section 4 #30

Test 3 Section 4 #30

# In the expression above, a is a constant. If the expression is equivalent to bx, where b is a constant, what is the value of b?

(4x + 4)(ax – 1) – x^2 + 4

In the expression above, a is a constant. If the expression is equivalent to bx, where b is a constant, what is the value of b?

A) -5

B) -3

C) 0

D) 12

No idea how to solve this! I tried factoring this way and that, expanding, setting everthing on left in form of x (….) + 4 = bx, but no go. Help!

# Test 1 No Calculator #7

Test 1 No Calculator #7

# Test 7 Section 3 #20 please

Test 7 Section 3 #20 please

# Test 8 Section 4 #27 please

Test 8 Section 4 #27 please

# PSAT #1, Section 3, #13

PSAT #1, Section 3, #13

# If r>0 and (9r/2)^(1/3) = (1/2) r, what is the value of r?

If r>0 and (9r/2)^(1/3) = (1/2) r, what is the value of r?

# Would you please help me with number 8 on page 56 please?

Would you please help me with number 8 on page 56 please?