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3 years ago

7

Help asap with work please

1 answer:

Andru [333]3 years ago

6 0

Its runner runner b, I think, then runner e, and 5th is runner f

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HELP!!!!!!!!!!!!!!!!!!!!!!!!

Over [174]

Answer: x<=-5

STEPS:
-4x+10>=5x+55
Subtract the ten from the right and and subtract it from the 55
-4x>=5x+45
Subtract the 5x from the left and subtract it from the -4x
-9x>=45
Divide both sides by -9
x>=-5
Flip sign since u divide by a negative number
x<=-5

4 0

2 years ago

Read 2 more answers

Does anyone know this answer?

Tems11 [23]

Just find the y intercept which is 7m.

7 0

4 years ago

Simplify:<br> (-2x)4<br> The 4 is an exponent

Rama09 [41]

The answer would be 16x^4

6 0

3 years ago

The area (in square inches) of a rectangle is given by the polynomial function A(x) = x^2+10x+24. If the width of the rectangle

lawyer [7]

Answer:

Length = x+4

Step-by-step explanation:

Area=length*width. First, you need to factor A(x) = x^2+10x+24, which would equal to (x+4)(x+6).

(x+4)(x+6)=(x+6)*length, length = x+4.

4 0

4 years ago

The ph of vinegar is 2.9 and the ph of milk is 6.6. How many times greater is the hydrogren ion concentration of vinegar than of

shutvik [7]

Answer:

D

Step-by-step explanation:

H+ is the hydrogen ion concentration.

This problem requires the use of solving log equation.

PH of vinegar is 2.9, lets find the number of hydrogen ions in it by using the equation:

$PH=-Log[H^{+}]\\2.9=-Log[H^+]\\-2.9=Log_{10}[H^+]$

Note: Log is normally base 10 if not specified

Now, to solve, we use exponential to log conversion formula shown below:

$Log_{z}x=b\\z^b=x$

Now lets solve:

$-2.9=Log_{10}[H^+]\\H^+=10^{-2.9}\\H^+=0.001259$

Now, the PH of milk is 6.6, so we follow same procedure and find the number of hydrogen ion in milk. Shown below:

$PH=-Log[H^{+}]\\6.6=-Log[H^+]\\-6.6=Log_{10}[H^+]\\H^+=10^{-6.6}\\H^+=0.0000002512$

So, to find how many times it is greater, we divide first answer we found by the second answer:

$\frac{10^{-2.9}}{10^{-6.6}}\\=5011$

That is about 5000 times, answer D is right.

3 0

3 years ago