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Lina20 [59]
3 years ago
12

What is the product? 3 x [-4 5 -7]

Mathematics
1 answer:
Dima020 [189]3 years ago
3 0

Answer:65

Step-by-step explanation: So the answers would be 78 as well

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If sin theta = 4/5 and theta is in quadrant 2, the value of cot theta is
trasher [3.6K]

Answer:

Cot(theta) = - 0.75 or -3/4

Step-by-step explanation:

The hypotenuse is 5

The y value is 4

We need to find the corresponding x value.

x^2 + y^2 = z^2

X = ?

y = 4

z = 5

x^2 + 4^2 = 5^2

x^2 + 16 = 25

x^2 = 9

Now in this case, you are in quadrant 2, so the x value is - 3

sqrt(x^2) = sqrt(9)

x = - 3

The cot value is the adjacent (x value) / the opposite ( y ) value

Cot(theta) = -3/4

cot(theta) = -0.75

8 0
3 years ago
Read 2 more answers
1) Madison went shopping and spent $125 she paid $45 in Texas what was the sale tax rate (percent)
Gnesinka [82]

Answer:

170

Step-by-step explanation:

<em>How the sales tax de-calculator works </em>

<em>Step 1: take the total price and divide it by one plus the tax rate. </em>

<em>Step 2: multiply the result from step one by the tax rate to get the dollars of tax. </em>

<em>Step 3: subtract the dollars of tax from step 2 from the total price. </em>

<em>Pre-Tax Price = TP – [(TP / (1 + r) x r] </em>

<em>TP = Total Price.</em>

3 0
3 years ago
How do you solve #10
IgorLugansk [536]
LINEAR \: \: EQUATIONS \\ \\ \\ Given \: expression \: \: - \: \\ \\ \frac{7}{3} (2x + 3) + \frac{3}{4} ( \frac{x}{5} - \frac{15}{2} ) = \frac{11}{8} \\ \\ \frac{14x}{3} + \frac{21}{3} + \frac{3x}{20} - \frac{45}{8} = \frac{11}{8} \\ \\ \frac{14x}{3} + \frac{3x}{20} + \frac{21}{3} - \frac{45}{8} = \frac{11}{8} \\ \\ \frac{289x}{60} = \frac{11}{8} + \frac{45}{8} - \frac{21}{3} \\ \\ \frac{289x}{60} = \frac{56}{8} - \frac{21}{3} \\ \\ \frac{289x}{60} = 7 - 7 = 0 \\ \\ \frac{289x}{60} = 0 \\ \\ \\ \: \: \: \:|| \: \: \: x = 0 \: \: \:|| \: \: \: \: \: \: \: \: \: \: \: \: \: Ans.
3 0
2 years ago
(3x2 + 5x + 7) - (-4x2 + 3x - 6
ELEN [110]

Answer:

7x2 + 2x + 13

Step-by-step explanation:

tiger algebra was used

https://www.tiger-algebra.com/drill/(3x2_5x_7)-(-4x2_3x-6)/

7 0
3 years ago
Solve for x<br><br> 2x - 1 - 1 = x - 3 - ( -5 + x )
Nana76 [90]

Answer:

x=2

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

2x−1−1=x−3−(−5+x)

2x−1−1=x−3+−1(−5+x)(Distribute the Negative Sign)

2x−1−1=x+−3+(−1)(−5)+−1x

2x−1−1=x+−3+5+−x

2x+−1+−1=x+−3+5+−x

(2x)+(−1+−1)=(x+−x)+(−3+5)(Combine Like Terms)

2x+−2=2

2x−2=2

Step 2: Add 2 to both sides.

2x−2+2=2+2

2x=4

Step 3: Divide both sides by 2.

2x

2

=

4

2

x=2

8 0
2 years ago
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