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
Alja [10]
3 years ago
6

Find the missing base (b1) of the trapezoid. Dimensions are in CM.

Mathematics
1 answer:
Alenkinab [10]3 years ago
5 0

Answer:

b1 = 9 cm

Step-by-step explanation:

The formula for area of a trapezoid is

A = 1/2 (b1+b2) *h

We know Area = 135 CM ^2, Height = 10 CM, b2 = 18 cm

Substituting these in

135 = 1/2 (b1+18) *10

Multiply 1/2*10

135 = 5 (b1+18)

Divide both side by 5

135/5 = 5/5 (b1+18)

27 = b1+18

Subtract 18 from each side

27-18 = b1+18-18

9 = b1

You might be interested in
Adam drew two same size rectangles and divided them into the same number of equal parts. He shaded 1/3 of one rectangle and 1/4
MArishka [77]

he divided each rectangle in 12 identical parts

for the first rectangle he shaded 1/3 of 12 = 4 parts

for the second rectangle he shaded 1/4 of 12= 3 parts


so 12= 3*4 leads to a minimum of 12 parts

:)

6 0
4 years ago
A local reader’s club has a set of 12 hardback books, a set of 18 paperbacks, and a set of 36 magazines. Each set can be divided
densk [106]
The answer is 6 members
4 0
3 years ago
El área de un rectángulo se calcula multiplicando la longitud de la base por la longitud de su altura.
ioda

<span>Para obtener el otro número, debemos dividir la base por el área. Haciendo eso obtenemos 8.6 Para verificar, multiplicamos 10.4 y 8.6. 10.4 x 8.6 = 89.44

 Entonces la respuesta es B.) 8.6</span>
4 0
3 years ago
Evaluate when x = 2 and y = 5:<br> 2 + (12 - 5x): 2g
Lemur [1.5K]

Just substitute x = 2 and y = 5 into the equation wherever you see x and y.

2 + (12 - 5x) · 2y

2 + (12 - 5(2)) · 2(5)

2 + (2) · 10

4 · 10

40, is the answer which should be the first box.

8 0
3 years ago
PLS HELP!!!!!!!!!!!!
seropon [69]

Answer:

72 55/76

Step-by-step explanation:

it's right trust me <3

8 0
2 years ago
Read 2 more answers
Other questions:
  • Are these congruent or not????
    15·2 answers
  • 9:45 on Tuesday Questions
    14·1 answer
  • PRECALCULUS HELP IM BEGGING YOU
    7·1 answer
  • Over which interval is the graph of the parent absolute value function f(x) = |xl decreasing?
    13·2 answers
  • (5X-4)(-4X-3).<br> How to do it in box method and simplify
    5·1 answer
  • Use the ruler to find 1 / 1/10 and 4 1/10
    15·1 answer
  • Whats the surface area of, 47 cm 25 cm 24 cm 14 cm ?
    10·1 answer
  • Five more than twice a number is nine.<br> What is the number?
    9·2 answers
  • Expand this expression (x-y)²<br>​
    15·1 answer
  • Which proportion could be used to determine if the figures could represent a dilation?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!