1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tatyana61 [14]
3 years ago
9

STUCK ON THESE!!! PLEASE HELP!

Mathematics
2 answers:
natita [175]3 years ago
7 0

Answer:

_20___ × (-1/2) × __2__ = -20

8 x (-1/2) x 5= -20

Step-by-step explanation:

Hope I helped

DIA [1.3K]3 years ago
3 0
-80 , 1/2 is the answer
You might be interested in
A principal of 750$ is invested in an account at 9% per year simple interest. What is the account total after 5 years
balandron [24]
Hi there
The formula of the future value of simple interest is
A=p (1+rt)
A future value?
P principle 750
R interest rate 0.09
T time 5years
So
A=750×(1+0.09×5)
A=1,087.5

Good luck!
4 0
3 years ago
Suppose you are climbing a hill whose shape is given by the equation z = 1400 − 0.005x2 − 0.01y2, where x, y, and z are measured
Anarel [89]
Answer: You start to ascend

Explanation:

Since you are walking due south and the positive y-axis points north, the y-coordinate decreases.

Let 

y' = y-coordinate after walking due south
z' = z-coordinate (or the height) after walking due south

So, the point where you stand after walking due south has a coordinate of (100, y', z'). Moreover,

z' = 1,400 - 0.05(100)^2 - 0.01(y')^2
\\ \boxed{z' = 1350 - 0.01(y')^2}

Since the y-coordinate decreases after walking due south and z' = 1350 - 0.01(y')^2,

y'  \leq 120\\ \Rightarrow (y')^2 \leq 120^2 = 14,400\\ \Rightarrow -0.01(y')^2 \geq -0.01(14,400) = -144\\ \Rightarrow z' = 1,350 - 0.01(y')^2 \geq 1,350 - 0.01(14,400) = 1,206\\ \Rightarrow \boxed{z' \geq 1,206}

So, the height after walking due south exceeds 1,206 meters, which is the previous height before walking due south. Therefore, if you walk due south from point with coordinates (100, 120, 1206), you are ascending.
5 0
4 years ago
Which number is equivalent to 7/8
PtichkaEL [24]

Answer:

78 is 7 divided by 8, which equals 0.875. So an equivalent fraction is another fraction that also equals 0.875.

6 0
3 years ago
Let f(x) = 5x + 4 and g(a) = a2 − 4a + 4 2 . Find the function value. g(−2)
natta225 [31]

Answer:  54

<u>Step-by-step explanation:</u>

replace "a" with "-2" in the g-equation

g(a) = a² - 4a + 42

g(-2) = (-2)² - 4(-2) + 42

        =  4       + 8   + 42

        =  54

7 0
3 years ago
The sum of three consecutive even numbers is 144. What is the smallest of the three numbers ?​
ikadub [295]

Answer:

2

Step-by-step explanation:

132+10+2=144

3 0
3 years ago
Other questions:
  • Help please I’ll give brainliest
    8·1 answer
  • What’s the definition of percent equation
    13·1 answer
  • The domain of u(x) is the set of all real values except 0 and the domain of v(x) is the set of all real values except 2. What ar
    5·2 answers
  • If you have a stack of pennies without counting them how do you know if there is an even or odd number of them
    9·1 answer
  • Find x<br><br>(a+3)² - 25 = 0​
    13·2 answers
  • The multiples of 4 have an even number in the tens place.What values do they have in the ones place? With multiples of 4 that ar
    12·1 answer
  • Q2.<br> Find the number that is exactly half way between -4 and 10
    5·1 answer
  • Simplify x + 4 − 5x − 2.
    6·2 answers
  • Help! Don’t know, pls help! Pls show you work too, thank you!
    9·1 answer
  • 3-<br><br><br> -<br><br><br> pls help!!!!<br><br><br><br> math<br><br><br> -
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!