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3 years ago

Match the term on the right with its image or description on the left.

Mathematics

2 answers:

Nuetrik [128]3 years ago

6 0

I agree add a picture or give specific details so we can answer your question next time! Good day.

jasenka [17]3 years ago

3 0

There is no picture to answer or have a base on try deleting it and re uploading the question

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Find the value for x. Round your answer to the nearest hundredth. Area of the triangle = 8 ft^2

zmey [24]

Answer:

x = 3.51

Step-by-step explanation:

Since, formula to determine the area f a triangle is,

Area = $\frac{1}{2}(\text{Base})(\text{Height})$

8 = $\frac{1}{2}(x + 1)(3x - 7)$

16 = x(3x - 7) + 1(3x - 7)

16 = 3x² - 7x + 3x - 7

16 = 3x² - 4x - 7

0 = 3x² - 4x - 23

3x²- 4x - 23 = 0

By quadratic formula,

x = $\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$

x = $\frac{4\pm \sqrt{(-4)^{2}-4(3)(-23)}}{2(3)}$

x = $\frac{4\pm \sqrt{292}}{6}$

x = $\frac{4\pm 17.09}{6}$

x = 3.51, -2.18

But the length of sides can't be negative.

Therefore, x = 3.51 will be the answer.

8 0

3 years ago

What is the value of t?<br> 40°<br> 39°

kramer

Answer:41

Step-by-step explanation:

because the 49 degrees and t equal a right angle which is 90 degrees you subtract 49 from 90 which makes the remaining degree aka t 41

5 0

3 years ago

Roy is twice as old as Joan, and in 3 years the sum of their ages will be 21 years. Find their present ages.

Lisa [10]

Answer:

Roy is 10 years old at present and Joan is 5 years old at present

Step-by-step explanation:

Let

x----> Roy's age

y----> Joan's age

we know that

x=2y ----> equation A

(x+3)+(y+3)=21 ----> equation B

substitute equation A in equation B

(2y+3)+(y+3)=21

solve for y

3y+6=21

3y=21-6

3y=15

y=5 years

Find the value of x

x=2y ----> x=2(5)=10 years

therefore

Roy is 10 years old at present

Joan is 5 years old at present

8 0

3 years ago

A bag contains five red marbles, four blue marbles, and four yellow marbles. You randomly pick a marble. What is the probability

Vikentia [17]

n(s)= 5+4+4=13

n(e)= red + blue

=5+4

so, p(e) = n(e)/n(s)

p(e)= 9/13

=0.69

it's your answer

it will help.

7 0

3 years ago

Chad is planning on painting his bedroom and the living room. His rectangular bedroom measures 10 feet by 12 feet and each wall

rosijanka [135]

Answer:

The correct answer is 3 × 5 + 3 × 7 + 6 × 7 = 78 square feet.

Step-by-step explanation:

Measures of Chad's window is 36 inches by 60 inches = 3 feet by 5 feet.

Area of the window is 15 square feet.

Measures of Chad's door is 36 inches by 84 inches = 3 feet by 7 feet.

Area of the door is 21 square feet.

Measures of Chad's closet is 72 inches by 84 inches = 6 feet by 7 feet.

Area of the closet is 42 square feet.

Equation to show the total area of window, door and closet is 15 + 21 + 42 = 78 square feet.

6 0

3 years ago