solve i 4 = -1
true or false

Answer:

16min

Step-by-step explanation:

80%*20min=4/5*20min=16min

Answer:

16 minutes

Step-by-step explanation:

If it takes 20 minutes and it takes Andre 80% as long, then you multiply 20 by %80

[tex]\text{Hello there!}[/tex]

To find a percentage, you will need to divide both numbers by each other. In this case, it would look similar to this:

[tex]\text{23 / 25 = ???}[/tex]

Once you divide the two numbers, you should end up with a result of [tex]0.92[/tex]

Now, we are going to move the decimal two spaces to the right to end up with the result:

[tex]\text{092.}[/tex]

Now, we are going to remove the [tex]0[/tex] as it is no longer required. Next, add a percentage symbol to the last number, and remove the decimal from the number.

Now, you should end up with something like this:

[tex]92\%[/tex]

[tex]\fbox{So your final answer is going to be 92\%}[/tex]

[tex]\rule{299}{1.5}[/tex]

Answer:

(-1, 1)

Step-by-step explanation:

Midpoint formula: (x₁ + x₂/2 , y₁ + y₂/2)

Substitute the values into the formula.

(-5 + 3/2 , 3 - 1/2)

(-2/2 , 2/2)

(-1,1)

Therefore, the midpoint is (-1, 1).

Answer:

total area of compound ABCDEF=36cm³

x(x-4)+(x-2)(2x+x)=36cm³

x²-4x+2x(x-2)+x(x-2)=36cm³

x²-4x+2x²-4x+x²-2x=36cm³

4x²-10x=36cm²

4x²-10x-36=0

2(2x²-5x-18)=0

2x²-5x-18=0÷3

2x²-5x-18=0proved.

2x²-(9-4)x-18=0

2x²-9x+4x-18=0

x(2x-9)+2(2x-9)=0

(2x-9)(x+2)=0

either

x=-2(negleted)

or

x=9÷2=4.5cm

Answer:

18.84  in

Step-by-step explanation:

C= 2(pi)r

c= 2(3.14)(3)

c=18.84 in

Answer:

8.8

Step-by-step explanation:

This is the correct answer because the 8 repeats.

Answer:

6

Step-by-step explanation:

To evaluate the expression if a = 4, b = 3, and c = 2, substitute those values for the variables and solve. So, substitute 4 for a, 3 for b, and 2 for c, then simplify by the correct order of operations, PEMDAS:

[tex]ab - bc \\(4)(3)-(3)(2)\\= 12 - 6 \\= 6[/tex]

Therefore, the answer is 6.

Answer:

yes

Step-by-step explanation:

hey can both be expressed as the quotient of two integers

Answer:

3b

Step-by-step explanation:

Thrice as large as b is another way of saying 3b, 3(b), or 3×b.

Answer:

-3/4 < -1/2

Step-by-step explanation:

have a good day luv! ^^

Answer:

90 inches

Step-by-step explanation:

The formula for volume is LxWxH so you just gotta do 5x6x3

which is 90.

The two consecutive whole numbers that 54 lies between are 27 and 28, since 54 is greater than 27 and less than 28.

The division in mathematics is one kind of operation. In this process, we split the expressions or numbers into the same number of parts.

To find two consecutive whole numbers that 54 lies between, we can start by dividing 54 by 2 and rounding down to the nearest whole number since we want two consecutive numbers that are less than and greater than 54:

54 ÷ 2 = 27

So the two consecutive whole numbers that 54 lies between are 27 and 28, since 54 is greater than 27 and less than 28.

To learn more about the division;

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Answer:

I think its C

Step-by-step explanation:

Step-by-step explanation:

8x-3y

Answer:

[tex]Q(t) = 50e^{-0.0527t}[/tex]

Step-by-step explanation:

A certain radioactive material is known to decay at a rate proportional to the amount present.

This means that the situation can be described by the following differential equation:

[tex]\frac{dQ}{dt} = -rQ[/tex]

In which r is the decay rate.

Solving the differential equation by separation of variables, we have that:

[tex]\frac{dQ}{Q} = -r dt[/tex]

Integrating both sides:

[tex]\ln{Q} = -rt + K[/tex]

In which K is the integrative constant.

Applying the exponential to both sides, to remove the ln, we get:

[tex]Q(t) = Ke^{-rt}[/tex]

In which K is the initial amount present.

Initially there is 50 mg/L

This means that [tex]K = 50[/tex].

After 2 hours it is observed that the material has lost 10 percent of its original concentration

This means that [tex]Q(2) = 0.9K[/tex]. So

[tex]0.9K = Ke^{-2r}[/tex]

[tex]e^{-2r} = 0.9[/tex]

[tex]\ln{e^{-2r}} = \ln{0.9}[/tex]

[tex]-2r = \ln{0.9}[/tex]

[tex]r = -\frac{\ln{0.9}}{2}[/tex]

[tex]r = 0.0527[/tex]

So

[tex]Q(t) = Ke^{-rt}[/tex]

[tex]Q(t) = 50e^{-0.0527t}[/tex]

Answer:

about 1.81

Step-by-step explanation:

Answer:

1.81?

Step-by-step explanation:

Answer:

x=-7,1

Step-by-step explanation:

Answer: x=-7,1

Step-by-step explanation:

Step-by-step explanation:

dhhehehewiwwiwjrieieiieedisiiee

Answer:

x < -1

Step-by-step explanation:

if he substituded 0 for x into the inequality, he gets 3>4. then he should notice it is incorrect so the riht way to solve is to use subtracting property of inequality and subtract 4 from both sides and get -1 > x

Answer:

the answer would actually be x< -1 then he should've checked his work by replacing the x with -1

Step-by-step explanation:

hope this helps sorry if it doesn't have a good night/day :) ❤

Answer:

yes

Step-by-step explanation:

Answer:

This is exponential.

Step-by-step explanation:

Hope this helps! Have a nice day!

Answer:

3079144

Step-by-step explanation:

Answer:

$52.03

Step-by-step explanation:

1. Approach

To solve this problem, first one needs to calculate the sales tax, then one must add that to the amount spent on the purchase. To calculate sales tax, one must convert the percent to decimal form, this can be done by dividing the percent by 100. Then one will multiply the decimal by the amount spent.

2. Find the tax

As states above; to calculate sales tax, one must convert the percent to decimal form, this can be done by dividing the percent by 100. Then one will multiply the decimal by the amount spent.

a. convert percent to decimal

8.4 / 100 = 0.084

b. multiply the decimal by the amount spent

48 * 0.084 = 4.032

The amount spent on sales tax is, $4.032

3. Find the total amount spent

Now all one has to do is add the amount spent in tax by the amount spent on the purchase.

48 + 4.032 = 52.032

Since money is only spent rounded to the second decimal point, one has to round the number;

52.03

Answer:

d. The distribution conforms to a normal distribution.

Step-by-step explanation:

A normal distribution is when data has equal symmetry such that the distribution is not positive skewed nor negative skewed. A normal distribution has zero skewness as mean, median and mode are all equal.

In the above example, the data has a normal distribution because most values lie close to the mean(7.9 percent are less than 38 and 8 percent are more than 66)

Answer:

25 percent is the answer

Step-by-step explanation:

If i got the answer coreect can y mark brainliest? thanks.

Answer:

8 represents the old value and 10 represents the new value. In this case, since the new value is greater than the old value, we have a positive shift (increase) of 25 percent.

Step-by-step explanation:

have a good day, i got this from g.o.og.l.e i dont know if this is what you want. i did add some of my thoughts to this answer

The relationship of congruency that describes that the given triangles are congruent is SAS.

We know two similar planer figures are congruent when we have sides or angles or both that are the same as the corresponding sides or angles or both.

Given, are two triangles with an included angle of 76° and the corresponding sides are congruent to each other.

∴ The relationship that shows that the triangles below are congruent are

side angle side or SAS.

learn more about congruency here :

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