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shutvik [7]
4 years ago
11

Is -8 + 3 = -8 - (-3) a true statement, and why??​

Mathematics
1 answer:
Greeley [361]4 years ago
7 0

Answer:

yes

Step-by-step explanation:

because -8+3=-5, and -8-(-3) has to cancel out the 2 negatives which will change it to -8+3 which makes it the same question

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What is the maximum height of the projectile? 82 feet 190 feet 226 feet 250 feet.
Contact [7]

The maximum height of the projectile will be 226 feet that is, as per question, the option c.

A quadratic equation , y = ax²+bx+c  (equation 1)

given, axis of symmetry is

x = \frac{b}{2a}

As per the question:

The path of the projectile is modeled using the equation :

h(t) = -16t²+48t+190  (equation 2)

h(t) = height after t time.

comparing equation 1 and equation 2, we get

a = -16 and b = 48

further, t = \frac{48}{2(-16)}

= \frac{48}{32}

= 1.5sec

Substituting the found value in equation 2, we get

h(1.5) = -16(1.5)²+48(1.5)+190

h(1.5) = -36+72+190

h(1.5) = 226ft.

Thus, the maximum height of the projectile at 1.5 sec is, 226 feet.

Note that the full question is:

A projectile with an initial velocity of 48 feet per second is launched from a building 190 feet tall. The path of the projectile is modeled using the equation h(t) = –16t2 + 48t + 190.

What is the maximum height of the projectile?

A. 82 feet

B. 190 feet

C. 226 feet

D. 250 feet

To learn more about velocity: brainly.com/question/25749514

#SPJ4

4 0
1 year ago
Will someone, please help solve this equation?​
kipiarov [429]

Answer:

131.25

Step-by-step explanation:

There are 3 trapezoids that you need to find its area, all the areas are the same.

Area of trapezoid:

A=(a+b)/2*h

a = 20

b = 15

h = (20-15)/2 = 5/2

A = (20+15)/2*5/2

A = 43.75

3A (3 gardens) = 131.25

7 0
3 years ago
ABCD is a rhombus, where m∠AED = 5x – 10. Use the properties of a rhombus to determine the value of x.
EastWind [94]

Answer:

Option b

Step-by-step explanation:

According to the property of rhombus at Centre it have 90°

So,

(5x - 10) {}^{o}  = 90 {}^{o}

5x = 90 + 10

5x = 100

x =  \frac{100}{5}

x = 20

Hope this helps u ^_^

4 0
3 years ago
What is 3.611 in expanded form
vivado [14]

Answer:

Expanded Notation Form:

3  

+   0.6

+   0.01

+   0.001

Expanded Factors Form:

 3 × 1  

+ 6 ×   0.1

+ 1 ×   0.01

+ 1 ×   0.001

Expanded Exponential Form:

3 × 100

+ 6 × 10-1

+ 1 × 10-2

+ 1 × 10-3

Word Form:

three and six hundred eleven thousandths

5 0
3 years ago
Three students made fruit punch to serve at the school carnival.
julsineya [31]

Answer:

136 GLASSES

Step-by-step explanation:

THERE ARE 40 CUPS IN 2.5 GALLONS

THERE ARE 36 CUPS IN 2.25 GALLONS

THERE ARE 60 CUPS IN 3.75 GALLONS

SO  {40+60=100

100+36=136

5 0
3 years ago
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