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3 years ago

7

HELP PLEASE?! I'm very bad at math and I need help with this question please.

2 answers:

Brrunno [24]3 years ago

7 0

6 + -9= -3 that is your answer

Dvinal [7]3 years ago

6 0

Y = -3. Yeah this can be hard at first but you'll get the hang of it, its simple once u have that clicking moment.
What the goal is is to get y by itself, right? Then u would have y = blank and thats what u need because ur trying to find y. So to get y alone and have that y = blank, u can "balance the equation." That means if u add something on the left side of the equation (before the equal sign) u have to add it to the right. Same with subtraction. In this equation, u would subtract 6 from both sides so there would be no 6 left on the left and a 6 on the right instead. ask me questions if u need more help! :)

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Answer has to be in units

chubhunter [2.5K]

It's a deal. Give me a question, and I'll give you an answer in units.

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4 years ago

Read 2 more answers

Solve for x.<br> −8x+14≥60 OR −4x+50<58

Reika [66]

Answer: The solution is,

$x\leq -\frac{23}{4}$ or $x>-2$

Step-by-step explanation:

Given compound inequality,

-8x + 14 ≥ 60 or -4x + 50 < 58,

By the subtraction property of inequality,

-8x + 14 - 14 ≥ 60 - 14 or -4x + 50 - 50 < 58 -50,

-8x ≥ 46 or -4x < 8

By the division property of inequality,

$-x \geq \frac{46}{8}$ or $-x < \frac{8}{4}$

Using property a > b ⇒ - a < -b,

$x\leq -\frac{23}{4}$ or $x>-2$

6 0

4 years ago

Find the value of x<br> A.25<br> B.85<br> C.75<br> D.105

Masteriza [31]

Answer:

The value of x is 75

Step-by-step explanation:

First we need to find the other angle that doesn't have a number in it.

To find the degrees of the other angle we subtract 155 from 180.

180 - 155 = 25

Now we have to find the value of x. Add 80 and 25 together to get 105. A triangle is going to be 180 degrees. Subtract 105 from 180.

180 - 105 = 75

Now we will add 80, 25, and 75 to check our work.

80+25+75 = 180

7 0

3 years ago

Find B:<br><br> 9.38<br><br> 88<br><br> 15.83<br><br> 4

mario62 [17]

Answer:

by using Pythagoras law

h²=p²+b²

13²=9²+b²

169-81=b²

b=√88=2√22m is your answer

4 0

3 years ago

A geologist in South America discovers a bird skeleton that contains 80% of its original amount of C-14. N0= initial amont of C-

kap26 [50]

A geologist in South America discovers a bird skeleton that contains 80% of its original amount of C-14

We use formula $N = N_oe^{-kt}$

N0= initial amont of C-14 (at time t=0)

N= amount of C-14 at time t

t= time, in years

k= 0.0001

N is 80% of N0 that is $N= 0.80N_o$

$N = N_oe^{-kt}$

$0.80N_o = N_oe^{-kt}$

Divide both sides by N_o

$0.8=e^{-0.0001 t}$

Take ln on both sides

$ln(0.8)=lne^{-0.0001 t}$

ln(0.8) = -0.0001t ln(e)

ln(0.8) = -0.0001t

Divide both sides by -0.001

t = 2231.435513

The age of the bird skeleton is 2231 years old

5 0

3 years ago