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
mafiozo [28]
3 years ago
7

For questions 1-5 estimate the sum or difference.

Mathematics
1 answer:
Andreyy893 years ago
5 0
1. 9/10 + 7/8 = 71/40 (or 1.775) so I'd say 2

2. 9/50 + 7/15 = 97/150 (or 0.64667...) so I'd say 1/2

3. is this 2/8 / 9 or 2 / 8/9 please let me know

4. is this 8/12 / 31 or 8 / 12/31 :)

5. is this 15/2 / 15 or 15 / 2/15

Please let me know the second halves of 3 through 5 as well! :)
You might be interested in
If u guys answer this one ill give away free p​
yawa3891 [41]

Answer:

\frac{50}{7}

Step-by-step explanation:

Swap the fraction,

5 *\frac{10}{7} = \frac{50}{7}

or around 7.142...

3 0
3 years ago
Carolyn and Joyce ordered a large pizza that had 12 slices. Carolyn ate 1
kondor19780726 [428]

Answer:

They ate \frac{1}{3} of the pizza

Step-by-step explanation:

Carolyn and Joyce at 4 slices of pizza altogether, and since there are 12 slices of pizza, they ate \frac{4}{12}=\frac{1}{3} of the pizza.

5 0
3 years ago
The equation y 16t 2 18t 405 describes the height in feet of a ball thrown downward at 18 feet per second from a height of 405 f
kumpel [21]

Answer:

Ball hits the ground after 4.5 sec

Step-by-step explanation:

Let a -1, so that the leading coefficient is positive

So our quadratic is

-1 \times (16t^2 +18t -405)

The key coefficients of two binomial variables can be 1 and 16, or 2 and 8, or 4 and 4, for the leading coefficient of 16.

Yet they can't actually be 4 and 4 because the linear (x) term coefficient has to be a multiple of 4, which it isn't and leading coefficients 1 and 16 on the binomial factors is not likely.

So, 2 and 8 taken as the leading coefficients of  two binomial factors.

For constant  405, possible factorizations are (81\times 5, 27 \times 15, 9 \times 45).

(16t^2 +18t -405) = (8t + 45) (2t - 9)

Taking first factor, thus we find  negative value for given time t. But  second time equivalent to zero gives the value of 4.5 for t

Thus ball hits the ground after 4.5 sec

.

3 0
4 years ago
If f(x)=-4x-5 and g(x)= 3-x, what is g(-4) +f(1)?<br><br> A.-10<br> B.7<br> C.-9<br> D.-2
Kisachek [45]

Answer:

-2

Step-by-step explanation:

sustitue -4 into x for 3-x which would equal 7 because a negative times a negative equals positive. Then substitue 1 in for x in -4x-5 which would get you -9

give brainliest pls

7 0
3 years ago
Suppose y varies inversely with x, and y = 25 when x = 1/5. What is the value of y when x = 5 ?
34kurt

Answer:

y = 1

Step-by-step explanation:

Given that y varies inversely with x then the equation relating them is

y = \frac{k}{x} ← k is the constant of variation

To find k use the condition y = 25 when x = \frac{1}{5} , then

25 = \frac{k}{\frac{1}{5} } = 5k ( divide both sides by 5 )

5 = k

y = \frac{5}{x} ← equation of variation

When x = 5, then

y = \frac{5}{5} = 1

8 0
3 years ago
Other questions:
  • Please help me Will mark brainiest
    11·2 answers
  • What is the value of x in the equation 4(2x + 10) = 0?<br><br> −5<br><br> −7<br><br> 5<br><br> 7
    14·2 answers
  • Please Help Meeeeeeeeeeeee
    14·1 answer
  • What is the value of y in the solution to the system of equations?
    6·1 answer
  • 5×+9y, when x=8 and y =11
    14·1 answer
  • Yo i need a high schoolers help on this math!
    6·1 answer
  • The cost of a Kit-Kat is $0.04 more than the cost of a Snickers. If you buy 4 Kit-Kats and 8 Snickers, the total cost is $12.76.
    10·1 answer
  • Solve 3(b-5) = 27
    6·1 answer
  • Intro to Systems of Equations
    15·1 answer
  • Britt estimated 8.8-6.2 by subtractions 9-6=3.it is overestimate or underestimate?​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!