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3 years ago

PLEASE HELP ME QUICK A recipe calls for 4

Mathematics

2 answers:

SCORPION-xisa [38]3 years ago

7 0

4 cups of water hope it helps

Brilliant_brown [7]3 years ago

5 0

Answer:4

Step-by-step explanation:if you only have one cup of sugar you will have to propitiate the rest so just divide 16 by 4 to get 4

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Suppose $2000 is deposited in an account paying 2.5% interest compounded quarterly. What will the account balance be after 12 ye

geniusboy [140]

A =
$p(1 + \frac{r}{n})^{nt}$
p = principal amount (the initial amount you borrow or deposit)
r = annual rate of interest (as a decimal)
t = number of years the amount is deposited or borrowed for.
A = amount of money accumulated after n years, including interest.
n = number of times the interest is compounded per year

$2000(1 + \frac{.025}{4})^{4 \times 12}$
$2,697.20

6 0

4 years ago

HELP WITH THIS PLEASE

kykrilka [37]

Answer:

P = 10x + 4

Step-by-step explanation:

Formula to find perimeter:

P = 2(l + w)

P = 2(2x + 3x + 2)

P = 2(5x + 2)

P = 10x + 4

5 0

3 years ago

Can you comment the answer because for some reason it won't show up :)

Finger [1]

D. 7 1/5

(4/5) *9= 7.2

7.2= 7 1/5

5 0

3 years ago

Here we go again lol I’m a failure and a disappointment according to my mom yayy

Nostrana [21]

Hello! Your answer is y = -7/3x + 2.

----

First, find the slope of the original line. The slope can be calculated by $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$ . Substitute in the points, and you get:

$\frac{3-(-3)}{13-(-1)}$

$\frac{6}{14}$

$\frac{3}{7}$

So now we get: slope = 3/7. We do not need the full equation of the first line, as a perpendicular line only requires the slope.

----

Perpendicular lines all have a slope that is a negative reciprocal of another. For example, if one line's slope was 1/4, the line perpendicular to it would have a slope of -4.

The negative reciprocal of 3/7 is -7/3. Therefore, we know the slope of the line that we are looking for is -7/3. We can substitute this into y = mx + b.

y = -7/3x + b

Now, we are given a coordinate point. Substitute that in and solve.

-5 = -7/3 * 3 + b

-5 = -7 + b

b = 2

----

Therefore, the final equation we are looking for is y = -7/3x + 2.

Hope this helps!

4 0

3 years ago

The article "Influence of Penetration Rate on Penetrometer Resistance" (see textbook for reference) presents measures of penetra

snow_tiger [21]

Answer:

The 95% of confidence interval for the mean penetration resistance for this soil is (2.0823, 3.1977).

Step-by-step explanation:

The sample size is 15.

The first step to solve this problem is finding how many degrees of freedom there are, that is, the sample size subtracted by 1. So

$df = 15-1 = 14$

Then, we need to subtract one by the confidence level $\alpha$ and divide by 2. So:

$\frac{1-0.95}{2} = \frac{0.05}{2} = 0.025$

Now, we need our answers from both steps above to find a value T in the t-distribution table. So, with 14 and 0.025 in the t-distribution table, we have $T = 2.145$ .

Now, we need to find the standard deviation of the sample. That is:

$s = \frac{1.02}{\sqrt{15}} = 0.26$

Now, we multiply T and s

$M = T*s = 2.145*0.26 = 0.5577$

For the lower end of the interval, we subtract the mean by M. So 2.64 - 0.5577 = 2.0823

For the upper end of the interval, we add the mean to M. So 2.64 + 0.5577 = 3.1977

The 95% of confidence interval for the mean penetration resistance for this soil is (2.0823, 3.1977).

7 0

3 years ago