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3 years ago

Can you help me quickly please I can’t figure it out

Mathematics

1 answer:

vesna_86 [32]3 years ago

7 0

Answer:

No, Andre is answer is reasonable

Step-by-step explanation:

This is true because if we were to add 2, 6, and 8 then we would get 16 which is an even number.

If that's not enough proof, then, try adding 10, 2, and 14, we would get 26 which is also an even number.

I hope this was enough to help you :)

Good Luck

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3 years ago

Help with delta math

ehidna [41]

Answer:

223,807

Step-by-step explanation:

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2 years ago

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Triangle ABC has a right angle at C. Select all measurements which would mean it has a hypotenuse with a length of 10 units. a.

Delvig [45]

Option d: Angle A is 30 degrees, BC is 5 units

Option e: AC is 8 units, BC is 6 units

Explanation:

The triangle ABC has a right angle at C.

The length of the hypotenuse is 10 units.

The image of the triangle with this measurement is attached below:

Option a: Angle A is 20 degrees, BC is 2 units

$\begin{aligned}\sin 20 &=\frac{2}{h y p} \\h y p &=\frac{2}{\sin 20} \\&=5.8476\end{aligned}$

Since, hypotenuse is 10 units, Option a is not correct answer.

Option b: AC is 7 units, BC is 3 units

$\begin{aligned}A B &=\sqrt{7^{2}+3^{2}} \\&=\sqrt{49+9} \\&=\sqrt{58}\end{aligned}$

Since, hypotenuse is 10 units, Option b is not correct answer.

Option c: Angle B is 50 degrees, BC is 4 units

$\begin{aligned}\cos 50 &=\frac{4}{h y p} \\h y p &=\frac{4}{\cos 50} \\&=6.222\end{aligned}$

Since, hypotenuse is 10 units, Option c is not correct answer.

Option d: Angle A is 30 degrees, BC is 5 units

$\begin{aligned}\sin 30 &=\frac{5}{h y p} \\h y p &=\frac{5}{\sin 30} \\&=10\end{aligned}$

Since, hypotenuse is 10 units, Option d is the correct answer.

Option e: AC is 8 units, BC is 6 units

$\begin{aligned}A B &=\sqrt{8^{2}+6^{2}} \\&=\sqrt{64+36} \\&=\sqrt{100} \\&=10\end{aligned}$

Since, hypotenuse is 10 units, Option e is the correct answer.

Thus, Option d and e are the correct answers.

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3 years ago

The school spent $504 on calculators. How<br> many did the school buy?

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Answer: how much did the calculators cost seperetely dummy

Step-by-step explanation:

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3 years ago

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Use substitution to solve the system 5x-3y=23 2x+y=7

Viefleur [7K]

Because "y" is + in <span>2x+y=7, let's subtract 2x from both sides and end up with an expression for y: y = 7 - 2x. Substituting this into 5x - 3y = 23,

5x - 3(7 - 2x) = 23. Multiply out -3(7 - 2x):

5x - 21 + 6x = 23. Combining 5x and 6x, 11x - 21 = 23, or 11x = 44.

Thus, x = 4. Since y = 7 - 2x, subst. x = 4 results in the value of y:

y = 7 - 2(4) = 7 - 8 = -1.

The solution is (4,-1).</span>

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3 years ago