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guajiro [1.7K]
3 years ago
5

Someone help me with a to f please.

Mathematics
1 answer:
fiasKO [112]3 years ago
4 0
A. Equilateral: All sides are the same length
b. Scalene: All sides are different lengths
c. <span>Equilateral: </span>All sides are the same length
d. Isosceles: Two sides are the same length
e. Scalene: All sides are different lengths
f. Isosceles: <span>Two sides are the same length

Hope this helps!</span>
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3e + 7 - e and 2e + 10 + 2e -3
ch4aika [34]

Answer:

The sum is

6e  + 14

Step-by-step explanation:

Assuming we are finding the sum of :

3e + 7 - e and 2e + 10 + 2e -3

Then we set up the addition as follows:

3e + 7 - e + 2e + 10 + 2e - 3

We group similar try to get:

3e  - e + 2e +  2e - 3 + 7 + 10

We now combine the similar terms to obtain:

6e  + 14

Therefore the sum is

6e  + 14

5 0
3 years ago
How do you do this question?
Sergeeva-Olga [200]

Answer:

V = 2000r³/3

Step-by-step explanation:

We know that the base is a circular disk, so it creates a circle on the xy plane. It would be in the form x² + y² = r². In other words x² + y² = (5r)². Let's isolate y in this equation now:

x² + y² = (5r)²,

x² + y² = 25r²,

y² = 25r² - x²,

y = √25r² - x² ---- (1)

Now remember that parallel cross sections perpendicular to the base are squares. Therefore Area = length^2. The length will then be = 2√25r² - x² --- (2). Now we can evaluate the integral from -5r to 5r, of [ 2√25r² - x² ]² dx.

\int _{-5r}^{5r}\:\left[\:2\sqrt{\left(25r^2\:-\:x^2\right)}\:\right]\:^2\:dx\\=\int _{-5r}^{5r}4\left(25r^2-x^2\right)dx\\\\= 4\cdot \int _{-5r}^{5r}25r^2-x^2dx\\\\= 4\left(\int _{-5r}^{5r}25r^2dx-\int _{-5r}^{5r}x^2dx\right)\\\\= 4\left(250r^3-\frac{250r^3}{3}\right)\\\\= 4\cdot \frac{500r^3}{3}\\\\= \frac{2000r^3}{3}

As you can see, your exact solution would be, V = 2000r³/3. Hope that helps!

3 0
2 years ago
I really need this! Thanks
Anon25 [30]
Triangle ABC is isosceles (even tho' it doesn't look so).

m<BDE = m<BED because of that.

Thus, 66 degrees + 2 m<BDE = 180 degrees, and

2 m<BDE = 114 degrees.  Thus, m<BDE = 57 degrees.
5 0
3 years ago
If i ran 3,520 ft per min how many miles will i run in a hour
Westkost [7]
1 hour = 60 minutes
3,520 * 60 = 211,200 feet per hour

Hope this helps
5 0
3 years ago
Bella had a spelling test at school.there were 40 words to spell on the test.she got 32 of them right.what percent of the words
MatroZZZ [7]
80%. 32 / 40 is .8 Converting .8 to a percent makes it 80%
7 0
3 years ago
Read 2 more answers
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