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Dimas [21]
3 years ago
8

-11b+7=4 someone help I’ve been stuck on this problem forever

Mathematics
1 answer:
morpeh [17]3 years ago
7 0

Answer: Hi!

First, we will use inverse operations to remove the 7. Subtract 7 on both sides:

7 - 7 = 0

4 - 7 = -3

Our equation now looks like this:

-11b = -3

Now we will use inverse operations to isolate the b. Divide -11 on both sides:

-11b ÷ -11 = b

-3 ÷ -11 = 3/11

Our equation now looks like this:

3/11 = b

3/11 is equal to b. This is your answer!

Hope this helps!

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Xp+yp=z solve for the variable p
anastassius [24]
Use the distributive property backwards.
xp+yp=z become p(x+y)=x, which solves to p=x/(x+y)
3 0
3 years ago
Tyler is offered to choose between three boxes that look identical. The first box contains 1 red pills and 19 blue pills, the se
Dafna1 [17]

Answer:

A) 0.15

B) 0.36

Step-by-step explanation:

First Box consist 1 red pills and 19 blue pills

second box consist 6 red pills and 14 blue pills

Third box consist 2 red pills and 18 blue pills

a) Prob ( randomly chosen pill is red) = \frac{1}{3} \times \frac{1}{20} + \frac{1}{3} \times \frac{6}{20} + \frac{1}{3} \times \frac{2}{20}

\frac{1}{60} (1+6+2) = 0.15

b)Prob ( 1 reds and 10 blue pilss) =\frac{1}{3} \frac{^1C_1\times ^{19}C_{10}}{^{20}C_{11}} + \frac{1}{3} \frac{^6C_1\times ^{14}C_{10}}{^{20}C_{11}} + \frac{1}{3} \frac{^2C_1\times ^{18}C_{10}}{^{20}C_{11}}

= \frac{1}{3} 1.106 = 0.368

7 0
3 years ago
Please show me how you find x and determine what x is <br> Thank you I appreciate it :)
AfilCa [17]

well, let's notice something, we have two 45° angles, now each of those will give use an equal opposite side, namely if that one side is "x", the other is her twin, "x" as well.

is a right-triangle, so we can use the pythagorean theorem, and we know the sides are x,x,6.


\bf \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies 6^2=x^2+x^2 \qquad \begin{cases} c=\stackrel{hypotenuse}{6}\\ a=\stackrel{adjacent}{x}\\ b=\stackrel{opposite}{x}\\ \end{cases} \\\\\\ 36=2x^2\implies \cfrac{36}{2}=x^2\implies 18=x^2\implies \sqrt{18}=x\implies \sqrt{9\cdot 2}=x \\\\\\ \sqrt{3^2\cdot 2}=x\implies \boxed{3\sqrt{2}=x}

7 0
3 years ago
Please help thank you so much! :)
vova2212 [387]
Well for the small box of Cornflakes you want to divide $6.30 by 18 and you should get $0.35 which is how much each oz cost.

For the large box you want to convert 2.2 lb to oz, you will get 35.2 oz. Next just do the same divide $8.80 by 35.2 and get $0.25 which is the cost for each oz in the large box.
4 0
3 years ago
Yolanda has 2 granola bars. Each serving is of a bar of granola.
RSB [31]

The model of the granola bars is an illustration of <em>ratios and proportions</em>.

The model that shows the total serving is model A

The given parameters are:

\mathbf{Bars = 2}

\mathbf{Serving = \frac{2}{5}}

So, the number of servings in both bars is:

\mathbf{Total = Bars \div Serving}

Substitute 2 for Bars and 2/5 for Servings

\mathbf{Total = 2 \div \frac{2}{5}}

Express as multiplication

\mathbf{Total = 2 \times \frac{5}{2}}

\mathbf{Total = \frac{10}{2}}

\mathbf{Total = 5}

The total number of servings is 5

The model that shows a total serving of 5 is model A (see attachment)

Read more about ratios and proportions at:

brainly.com/question/7810782

6 0
3 years ago
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