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muminat
4 years ago
13

What are algerberic operations​

Mathematics
1 answer:
mezya [45]4 years ago
8 0

Answer:

a mathematical expression including variables and numbers

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The helicopter can travel 75 miles per hour. How many miles per minute can the helicopter travel?
Contact [7]

Answer:

4.69 miles per minute

Step-by-step explanation:

75 ÷ 60 (60 minutes in an hour) = 4.6875

4.6875 rounded to the nearest hundredth is 4.69

8 0
3 years ago
Solve for x in this circle.
Katen [24]

Answer:

Step-by-step explanation:

7*(7 + x+1) = 6*(x + 5 + 6)       {Intersecting secant theorem}

7 *(x + 8) = 6*(x + 11)

Distributive property,

7x + 56   = 6x + 66

Subtract 56 from both sides

7x = 6x + 66 - 56

7x = 6x + 10

Subtract 6x from both sides

7x - 6x = 10

x = 10

8 0
3 years ago
Factor the expression: 20b - 16
mafiozo [28]
When factoring this expression 20b-16, find the GCF (greatest common factor) among both terms. For this case, it is 4 which is the GCF. Therefore,

20b - 15 is equal to 4(5b - 4)

The factors of the expression are 4 and 5b-4.

I hope my answer has come to your help. Thank you for posting your question here in Brainly.
6 0
3 years ago
Read 2 more answers
Find the projection of u = <–6, –7> onto v = <1, 1> a. <-13/2,-13/2> b. <39,91/2> c. <-13/1764,-13/17
Alexandra [31]
<h2>Answer:</h2>

a. <-13/2,-13/2>

<h2>Step-by-step explanation:</h2>

The projection of a vector u onto another vector v is given by;

proj_vu = (\frac{u.v}{|v|^2})v               ----------------(i)

Where;

u.v is the dot product of vectors u and v

|v| is the magnitude of vector v

Given:

u = <-6, -7>

v = <1, 1>

These can be re-written in unit vector notation as;

u = -6i -7j

v = i + j

<em>Now;</em>

<em>Let's find the following</em>

(i) u . v

u . v = (-6i - 7j) . (i + j)

u . v = (-6i) (1i) + (-7j)(1j)          [Remember that, i.i = j.j = 1]

u . v = -6 -7 = -13

(ii) |v|

|v| = \sqrt{(1)^2 + (1)^2}

|v| = \sqrt{2}

<em>Substitute these values into equation (i) as follows;</em>

proj_vu = [\frac{-13}{(\sqrt{2}) ^2}][i + j]

proj_vu = \frac{-13}{2} [i + j]

This can be re-written as;

proj_vu = \frac{-13}{2}i + \frac{-13}{2}j

proj_vu =

5 0
3 years ago
What is 106% of $= to $7.95
ankoles [38]
So, I'm not quite sure what you're asking, so I'll answer it two different ways.
7.95 + (7.95 * 1.06)
7.95 + 8.247 = $16.197

The second way:
1.06n = 7.95
n = 7.95 / 1.06
n = 7.5
106 Percent of $7.50 is 7.95
4 0
3 years ago
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