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2 years ago

HELP ASAPPP!

Mathematics

1 answer:

Blababa [14]2 years ago

4 0

Answer: $1.50x+3.50\leq 30$

Step-by-step explanation:

x represents how many miles after the pick-up. we add on 3.50 because that is the intial pick-up price. then the cost has to be under 30 because she only has 30 dollars

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3 years ago

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Q5: A school sells tickets to a play. Adult tickets are $8 and student tickets are $4. The school

ella [17]

Answer:

40 adult tickets 68 student tickets

Step-by-step explanation:

8a + 4s = 592

4(a + s = 108)

8a + 4s = 592

4a+ 4s = 432 -

------------------------------

4a = 160

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3 years ago

Which is the domain of the function shown in the mapping

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The domain is the x-values of a function, which are also known as the input. When writing down the domain, you write the numbers from least to greatest. Therefore, the correct answer is A.

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4 years ago

Jackie Rider took out a loan of $20,000 to be repaid at the end of 7 months in one payment with interest at 11 and a half percen

san4es73 [151]

Answer:

The interest was 2,300 and he had to pay 22,300 at the end of the loan

Step-by-step explanation:

he only had to make a one time payment so he only has to make the interest one time. take 20,000 times .115 which is 11.5% in decimal form which is 2,300, that is how much interest he had to pay. the total amount he had to pay was the loan ($20,000) plus the interest ($2,300) so he paid in total $22,300

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3 years ago

Find the height of the triangle by applying formulas for the area of a triangle and your knowledge about triangles.

mariarad [96]

The height of the triangle is approximately $4.35\text{ mm}$

Step-by-step explanation:

The area of a triangle can be calculated by using the Heron's formula.

Heron's formula: 

Suppose a triangle has sides $a'$ , $b'$ and $c'$ , then the semi-perimeter $S$ of the triangle is represented by the expression,

$S=\frac{a'+b'+c'}{2}$

The area $A$ of the traingle is formulated below.

$\fbox {\begin\\A=\sqrt{s(s-a')(s-b')(s-c')}\end{minispace}}$

To calculate the area of the triangle with sides $9 \text{ mm}$ , $6 \text{ mm}$ and $12 \text{ mm}$ , first find the semi-perimeter.

$S=\frac{9+6+12}{2}\\S=\frac{27}{2}\\S=13.5 \text{ mm}$

Now, the area of the triangle is calculated below.

$A=\sqrt{s(s-a)(s-b)(s-c)}\\A=\sqrt{13.5(13.5-9)(13.5-6)(13.5-12)}\\A=\sqrt{13.5 \times 4.5 \times 7.5 \times 1.5}\\A=\sqrt{\frac{135}{10}\times\frac{45}{10}\times\frac{75}{10}\times\frac{15}{10}} \\A=\sqrt{\frac{(15\times3\times3) \times (15\times3) \times (15\times5) \times15}{100\times100}}\\A=\frac{15\times15\times3\sqrt{15 } }{100} \\A=2.25\times3\times3.87\\A=26.122$

Area A of a triangle with a altitude P and one side as base B on which the altitude P is drawn, can be calculated as,

$\fbox{\begin\\A= \left[\frac{1}{2}(B)(P)\right]\\\end{minispace}}$

Now, the area of the same triangle can also be calculated as,

$A=\frac{1}{2}(12)(x)\\A=6x$

In the above calculations, area of the triangle is calculated in two ways.

Therefore, both the areas can be equated to obtain the altitude $x$ .

$6x=26.122\\x=\frac{26.122}{6}\\x=4.35$

Thus, the height of the triangle is evaluated as $\fbox{4.35 \text{ mm}}$ .

Learn more:

1. Prove that AB2+BC2=AC2https://brainly.com/question/1591768

2. Which undefined term is needed to define an angle? brainly.com/question/3717797

3. Look at the figure, which trigonometric ratio should you use to find x? brainly.com/question/9880052

Answer Details

Grade: Junior High School

Subject: Mathematics

Chapter: Area of triangle

Keywords: area of triangle, heron's formula, base multiplied by height, base multiplied by perpendicular, base multiplied by altitude, right triangle, altitude corresponding to base, area of right triangle

5 0

3 years ago