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2 years ago

Please help thank you

Mathematics

1 answer:

ioda2 years ago

6 0

Tan65°=h/75m

2.1445 × 75 = h

h = 160.83

Step-by-step explanation:

This is very very simple

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Two trapezoids below are similar what is the length of RS?

stepladder [879]

9514 1404 393

Answer:

11.5 m

Step-by-step explanation:

The fact that the figures are similar means the side lengths are proportional:

RS/QT = BC/AD

RS/(7 m) = (2.3 m)/(1.4 m)

RS = (7 m)(2.3/1.4) . . . . . . multiply by 7 m

RS = 11.5 m

6 0

3 years ago

Two cards are selected from a standard deck of 52 playing cards the first card is not replaced before The second card is selecte

spin [16.1K]

Answer:

1/2652

Step-by-step explanation:

1/52*1/51=1/2652

4 0

3 years ago

Read 2 more answers

What is the solution to sqrt 17-x=x+3? Show your work.

snow_lady [41]

Answer:

$x=1$

Step-by-step explanation:

Remember:

$(\sqrt[n]{a})^n=a\\\\(a+b)=a^2+2ab+b^2$

Given the equation $\sqrt{17-x}=x+3$ , you need to solve for the variable "x" to find its value.

You need to square both sides of the equation:

$(\sqrt{17-x})^2=(x+3)^2$

$17-x=(x+3)^2$

Simplifying, you get:

$17-x=x^2+2(x)(3)+3^2\\\\17-x=x^2+6x+9\\\\x^2+6x+9+x-17=0\\\\x^2+7x-8=0$

Factor the quadratic equation. Find two numbers whose sum be 7 and whose product be -8. These are: -1 and 8:

$(x-1)(x+8)=0$

Then:

$x_1=1\\x_2=-8$

Let's check if the first solution is correct:

$\sqrt{17-(1)}=(1)+3$

$4=4$ (It checks)

Let's check if the second solution is correct:

$\sqrt{17-(-8)}=(-8)+3$

$5\neq-5$ (It does not checks)

Therefore, the solution is:

$x=1$

3 0

3 years ago

Mo wrote and solved the equation below to find the cost per magnet. 66.25w=795 W=12

crimeas [40]

? what are you trying to find

5 0

3 years ago

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John wanted to estimate the product of 5.2 and 6.7. What is the best estimate for his problem?

NNADVOKAT [17]

Round 5.2 down to 5 and Round 6.7 to 7.
5+7=12

8 0

3 years ago

Read 2 more answers