MATHEMATICS MIDDLE SCHOOL

Maria solved the area problem below. What was her error?(
1
2
) (25.5)(30) (
1
5
) = 76.5cm²

Maria solved the area problem below. What was her error?


She found the perimeter.
She forgot to square the scale factor.
She forgot to multiply by One-half for the area of the triangle.
She should have divided by the square of the scale factor.

Answers

Answer 1
Answer:

Answer:

b

Step-by-step explanation:
Answer 2
Answer:

Answer:

o my quizlet page its b

Step-by-step explanation:

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List all the factors of the number. 14

Answers

so 14 is 2 times 7 or 1 times 14 so the factors are
1,2 7,14
The factors of 14 are: 1, 2, 7, 14

Jonas is making a map of his neighborhood for a school project. He knows that his house is 1.2 miles from the park. If every 0.25 ft on his map represents 0.8 mile, how far will his house be from the park on the map?

Answers

Answer:

His house is 0.375 ft. far from the park on the map.

Step-by-step explanation:

Jonas is making a map of his neighborhood for a school project.

The distance between his house and the park = 1.2 miles

He represents 0.8 mile on his map = 0.25 feet

Therefore, 1 mile on the map = (0.25)/(0.8)

so, 1.2 miles on the map = (0.25)/(0.8) × 1.2

= 0.3125 × 1.2 = 0.375 ft.

His house is 0.375 ft. far from the park on the map.
1.2 ÷.8 =1.5 1.5×.25 ft = .375 ft

State if the triangles in each pair are similar.If so, state how you know they are similar and complete the similarity statement.
A) similar; SAS similarity; ΔBAC
B) not similar
C) similar; SSS similarity; ΔABC
D) similar; SAS similarity; ΔABC

Answers

Answer:  The correct option is

(C)  similar; SSS similarity; ΔABC.

Step-by-step explanation:  We are given to check whether the pair of triangles in the figure are similar to each other or not.

If so, we are to complete the similarity statement.

From the figure, we note that

the lengths of the sides of triangle STU are

ST = 72, TU = 80 and SU = 56.

And, the lengths of the sides of triangle ABC are

AB = 27, BC = 30 and AC = 21.

So, we get

(ST)/(AB)=(72)/(27)=(8)/(3),\n\n\n(TU)/(BC)=(80)/(30)=(8)/(3),\n\n\n(SU)/(AC)=(56)/(21)=(8)/(3).

That is,

(ST)/(AB)=(TU)/(BC)=(SU)/(AC)=(8)/(3).

Therefore, the corresponding sides of the two triangles are proportional.

Hence, triangle ABC and STU are similar by SSS similarity.

Option (C) is CORRECT.  

Answer:

Option C) similar; SSS similarity; ΔABC

Step-by-step explanation:

we know that

The SSS similarity state : If the corresponding sides of two triangles are proportional, then the two triangles are similar

In this problem

80/30=56/21=72/27

2.67=2.67=2.67 -----> is true

therefore

The triangles STU and ABC are similar by SSS similarity

Find the values of k that make 2x^(2)+kx+7 factorable.

Answers

1)\n(2x+1)(x+7)=2x^2+14x+x+7=2x^2+15x+7\ \ \Rightarrow\ \ k=15\n\n2)\n(2x-1)(x-7)=2x^2-14x-x+7=2x^2-15x+7\ \ \Rightarrow\ \ k=-15\n\n3)\n(2x+7)(x+1)=2x^2+2x+7x+7=2x^2+9x+7\ \ \Rightarrow\ \ k=9\n\n4)\n(2x-7)(x-1)=2x^2-2x-7x+7=2x^2-9x+7\ \ \Rightarrow\ \ k=-9\n\n\nAns.\ there\ are\ four\ solutions:\ k\in \{15;-15;9;-9\}
the values of k that make >      2x² + kx + 7     factorable
the values of k are      9 & 15
thus
(2x² + 9x + 7)  =      (2x + 7)(x+ 1)              k -9
(2x²  + 15x + 7)  =    (2x +1)(x+7)                K  =15

I should know this, but i'm really stumped, I keep getting different answers.z ÷ 4 – 8z + 2(z – 5) when z = 12

Answers

z/4-8z+2(z-5)=12/4-8*12+2(12-5)=3-96+2*7=3-96+14=-79

Range,median,mode
WILL MARK BRAINLIEST^^^^^^

Answers

Answer:

Range: 0.07

Median: 0.15

Mode: 0.15 and 0.16      (This is bimodal. It has 2 modes.)

Step-by-step explanation:

When you have a line and dots, that means that that number is repeated by the number of dots. So, since, 0.11 has 3 dots, when you write out all the numbers, you will write 0.11 3 times. (In the picture attached below, I have put every single number in order so you can see what I mean.)

The Range is the biggest number minus the smallest: 0.18 - 0.11 = 0.07

The Median is the middle number: 0.15    (Look at picture)

The Mode is the number that occurs most often: 0.15 & 0.16

Having 2 modes is possible. They both just have to be repeated the same amount of times.
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