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melisa1 [442]
3 years ago
15

(5b-7)(b-7)=0 what does this mean?

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
4 0

Answer:

those are the x-intercepts  

Step-by-step explanation:

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Please help i dont know how to do any of this i will be giving brainlyest
Mumz [18]

Answer:

this topic is on indices . look at these examples and try if you will understand.

6 0
3 years ago
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Ava bought 7.73 pounds of fruit for a class party. the class ate 3.59 pounds of the fruit. how much fruit is left?
dem82 [27]

Ava bought 7.73 pounds of fruit for a class party , class ate 3.59 pounds fruits then 4.14 pounds fruit left after party.

How can we find how much fruit is left after party ?

Ava bought =7.73 pounds fruit

ate by class =3.59 pounds fruit

fruit left after party = total fruit -fruit ate by class

                                = 7.73-3.59\\=4.14

So 4.14 pound fruit is left .

Learn more about the fruit left here :

brainly.com/question/28048819

#SPJ4

6 0
2 years ago
If you start with 85 milligrams of Chromium 51, used to track red blood cells, which
zysi [14]

About 92 days are taken for 90 % of the material to <em>decay</em>.

The mass of radioisotopes (m), measured in milligrams, decreases exponentially in time (t), measured in days. The model that represents such decrease is described below:

m(t) = m_{o}\cdot e^{-\frac{t}{\tau} } (1)

Where:

  • m_{o} - Initial mass, in milligrams.
  • m(t) - Current mass, in milligrams.
  • \tau - Time constant, in days.

In addition, the time constant is defined in terms of half-life (t_{1/2}), in days:

\tau = \frac{t_{1/2}}{\ln 2} (2)

If we know that m_{o} = 85\,mg, t_{1/2} = 27.7\,d and m(t) = 8.5\,mg, then the time required for decaying is:

\tau = \frac{t_{1/2}}{\ln 2}

\tau = \frac{27.7\,d}{\ln 2}

\tau \approx 39.963\,d

t = -\tau \cdot \ln \frac{m(t)}{m_{o}}

t = -(39.963\,d)\cdot \ln \frac{8.5\,mg}{85\,mg}

t\approx 92.018\,d

About 92 days are taken for 90 % of the material to <em>decay</em>.

We kindly invite to check this question on half-life: brainly.com/question/24710827

8 0
2 years ago
David records the number of visitors to the snake exhibit each day for 6 days .His data are shown in the table .If admission is
Ainat [17]

Answer:

\$1,176

Step-by-step explanation:

<u><em>The complete question in the attached figure</em></u>

we know that

To find out how much money the total snake exhibit earned in 6 days, add up the total number of visitors to the snake exhibit each day for 6 days and multiply that by the cost of admission per person

so

Find the total number of visitors for 6 days

30+25+44+12+25+32=168\ visitors

Multiply the total number of visitors by the admission cost per person

so

168(7)=\$1,176

7 0
3 years ago
WILL MARK BRAINLIEST ASAP!!
7nadin3 [17]

\dfrac{x^2+ax-4}{x+2}+\dfrac{x+b}{x+2}=\dfrac{x^2+ax-4+x+b}{x+2}=\dfrac{x^2+(a+1)x+(b-4)}{x+2}\\\\\dfrac{x^2+(a+1)x+(b-4)}{x+2}=x+1\\\\\dfrac{x^2+(a+1)x+(b-4)}{x+2}=\dfrac{(x+1)(x+2)}{x+2}\\\\\dfrac{x^2+(a+1)x+(b-4)}{x+2}=\dfrac{(x)(x)+(x)(2)+(1)(x)+(1)(2)}{x+2}\\\\\dfrac{x^2+(a+1)x+(b-4)}{x+2}=\dfrac{x^2+2x+x+2}{x+2}\\\\\dfrac{x^2+(a+1)x+(b-4)}{x+2}=\dfrac{x^2+3x+2}{x+2}\iff a+1=3\ \wedge\ b-4=2\\\\\boxed{a=2\ \wedge\ b=6}

3 0
3 years ago
Read 2 more answers
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