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Mariana [72]
3 years ago
12

Help?? I don't get it!

Mathematics
2 answers:
Gala2k [10]3 years ago
4 0
The answer should be y=-4x^2
m_a_m_a [10]3 years ago
3 0
I hope this helps you

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AB is a line of symmetry of this arrow shape. A)Calculate The Perimeter of the shape.
maw [93]

Answer:

A)58cm

B)h=4\sqrt{5}cm

C)125.55square cm

Step-by-step explanation:

AB is a line is symmetry

Total length of left half part=12cm+9cm+3cm+5cm

Total length of left half part=29 cm

Length of left half part=Length of right half part

Therefore, length of right half part=29 cm

A) Perimeter of the shape=29cm+29cm=58cm

B)

Pythagoras theorem

(Hypotenuse)^2=(Base)^2+(Perpendicular\;side)^2

Hypotenuse=12 cm

Base=5+3=8cm

In triangle ADC

Now, using Pythagoras  theorem

(12)^2=8^2+h^2

144=64+h^2

h^2=144-64=80

h=\sqrt{80}=4\sqrt{5}cm

C)

Area of shape=Area of triangle+ area of rectangle

Area of shape=\frac{1}{2}\times b\times h+l\times b

Where l=9cm

breadth=3+3=6cm

h=4\sqt{5}cm

base=2(5)+3(2)=16cm

Area of shape=\frac{1}{2}\times\times 16\times 4\sqrt{5}+9\times 6

Area of shape=125.55 square cm

7 0
3 years ago
Question 5 (1 point)
Airida [17]

Answer:

y = 90

Step-by-step explanation:

If y varies jointly as x and z, then;

y = kxz

If y = 18 when x = 2 and z = 3

18 = k(2)(3)

18 = 6k

k = 18/6

k = 3

To get y when x = 5 and z = 6

y = kxz

y = 3(5)(6)

y = 15*6

y = 90

Hence the value of y is 90

3 0
3 years ago
(2x+1)(x^2+8x-3)<br> help standard form​
trapecia [35]

Answer:

2x^3+17x^2+2x-3

Step-by-step explanation:

\left(2x+1\right)\left(x^2+8x-3\right)\\=2xx^2+2x\cdot \:8x+2x\left(-3\right)+1\cdot \:x^2+1\cdot \:8x+1\cdot \left(-3\right)\\=2x^3+17x^2+2x-3

In this equation, the variables were isolated to simplify the problem, following the order of operations. Negative-three either became an exponent or positive integer, 3, subtracted by a byproduct of the previous equation.

6 0
2 years ago
In tasha school 0.600 of tge students participate in a school sport. if there are one thousand students in Tasha''s school how m
Angelina_Jolie [31]
<span>1.       </span><span>In tasha school there are 0.600 of the student participate in a school sport.
there are a total of 1000  student are in tasha school.
Now, how many of the 1000 did participated in the said school sport event.
=> .600 x 1000
=>  600
Therefore, 600 out of 1000 students participated in their school sports event.
=> this is also equals to:
=> .600 = .6
=> 6/10 x 1000
=> 6 / 1000
The answer is 600. </span>



7 0
3 years ago
In​ randomized, double-blind clinical trials of a new​ vaccine, rats were randomly divided into two groups. Subjects in group 1
Anton [14]

Answer:

Beng has 2 apples he stole 1 from your mom than his dad beat him up and returned it how much apples does he have left.

Step-by-step explanation:

will he has 2

8 0
3 years ago
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