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Studentka2010 [4]
4 years ago
9

What is the answer for (-7) - (-4)?​

Mathematics
2 answers:
Rus_ich [418]4 years ago
8 0
-3 is the answer as 2 negatives turn into a positive so essentially you could write the question as (-7)+4
mina [271]4 years ago
7 0

Answer:

- 3

Step-by-step explanation:

Note that - (-) = +

Given

- 7 - (- 4)

= - 7 + 4

= - 3

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The number of blueberries in a blueberry muffin baked by EarthHarvest Bakeries can range from 20 to 40 blueberries. (a) Use the
taurus [48]

Answer:

a) Standard deviation: 3 bluberries

b) We assume, to apply this rule, that the distribution of blueberries per muffin has a bell-curve distribution, approximately normal.

Step-by-step explanation:

We know that the number of blueberries in a blueberry muffin baked by EarthHarvest Bakeries can range from 20 to 40 blueberries.

a) If we use the Empirical Rule 68-95-99.7, specifically the last term, we have that:

- 99.7% of the data will fall between 3 standard deviations from the mean.

Then, if we consider the range of 20 to 40 containing 99.7%, we can calculate the standard deviation as:

UL-LL=2*(3\sigma)\\\\40-20=6\sigma\\\\ \sigma=20/6=3.33\approx 3

8 0
3 years ago
Solve for X (PLZ HELP ASAP)
Arte-miy333 [17]

Answer:

x=8

Step-by-step explanation:

The exterior angle of the triangle is equal to the sum of the opposite interior angles

11x+2 = 6x+2 + 40

Combine like terms

11x+2 = 6x+42

Subtract 6x from each side

11x+2-6x = 6x+42-6x

5x+2 = 42

Subtract 2 from each side

5x+2-2 = 42-2

5x = 40

Divide each side by 5

5x/5 = 40/5

x = 8

7 0
3 years ago
Read 2 more answers
Find two numbers if their difference is 16 and their ratio is 5:7.
sleet_krkn [62]
7x-5x=16
2x=16
x=8
so 7*8=56
     5*8=40
56:40
56-40=16

8 0
3 years ago
Read 2 more answers
The function h(t) = 210 – 15t models the altitude of a hot air balloon over time t, in minutes.
Liula [17]
H(10) is the altitude of a hot air balloon overtime after 10 minutes. In order to find h(10)'s value, you just have to substitute 10 as t in the equation. h(10) and h(t) represents the value of y in a linear equation. So pretty much: h(10)= 210 - 15(10). If calculated correctly, h(10)=60.
8 0
3 years ago
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Which set of numbers is correctly ordered from least to greatest?
kakasveta [241]

Answer:

First option.

===========================

Step-by-step explanation:

The given set of numbers are:

\frac{24\pi }{5} \ , \frac{63}{4} \ , 15.758 \ , 956\sqrt{e}

And it is required to order the set of numbers correctly from least to greatest.

The easiest way is to convert all numbers to decimal and comparing it.

\frac{24\pi }{5} =15.0796\\\frac{63}{4}=15.75\\ 956\sqrt{e} =1,576.178

So, The order from least to greatest is as following

\frac{24\pi }{5}  \ , \frac{63}{4} \ , 15.758 \ , 956\sqrt{e}

So, the correct answer is first option.

7 0
3 years ago
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