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vazorg [7]
3 years ago
14

Help me pleasseeee :)

Mathematics
1 answer:
iVinArrow [24]3 years ago
4 0
 3x+7 = 51-x
4x = 44
x = 11

answer
x = 11
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if trapezium of area 140 cm horsepower sides 10 cm apart and one of them decides is 16 cm longfind the area find the length of t
Vilka [71]

Given :

  • Area of the trapezium is 140 cm².
  • Its height is 10 cm.
  • One of the parallel side is 16 cm.

To Find :

  • The other parallel side.

Solution :

  • Let the other parallel side be x

We know that,

{ \qquad \: \pmb{ \dfrac{1}{2} \times (sum \: of \: the \: parallel \: sides) \times height} = \pmb{Area_{(trapezium)}}}

Now, Substituting the given values in the formula :

\qquad { \dashrightarrow \: { \sf{ \dfrac{1}{2} \times (16 + x)\: \times 10 \: = {140}}}}

\qquad { \dashrightarrow \: { \sf{ 5 \times (16 + x)\  \: = {140}}}}

\qquad { \dashrightarrow \: { \sf{ 80 + 5x = {140}}}}

\qquad { \dashrightarrow \: { \sf{  5x = {140 - 80}}}}

\qquad { \dashrightarrow \: { \sf{  5x = {60}}}}

\qquad { \dashrightarrow \: { \sf{  x = { \dfrac{60}{5} }}}}

\qquad { \dashrightarrow \: { \pmb{  x = { 12 }}}}

Therefore,

  • The other parallel side of the trapezium is 12 cm.
8 0
2 years ago
SECTION 3<br> Question 9 - Find the value of x :<br> 10 cm<br> x cm<br> 2x cm
attashe74 [19]

Answer:

Step-by-step explanation:

more info plz

8 0
3 years ago
Read 2 more answers
The coordinates for a quadrilateral are (0, 0), (-1, 2), (1, 6) and (2, 4). Determine the type of quadrilateral.
Nesterboy [21]

Answer:D is a rectangle

Step-by-step explanation:

8 0
3 years ago
First find the estimate of the quotient then find the exact quotient 3 3/7 divide by 1 4/9
svet-max [94.6K]
Estimate of the quotient:
3 3/7 = 3+0.428571=3.428571
1 4/9 = 1+0.444444=1.444444
(3 3/7) / (1 4/9) = 3.428571 / 1.444444 = 2.373627

Estimate of the quotient: 2.373627

Exact quotient:
3 3/7=(7*3+3)/7=(21+3)/7=24/7
1 4/9=(9*1+4)/9=(9+4)/9=13/9

(3 3/7) / (1 4/9) = (24/7) / (13/9) = (24/7)*(9/13)=(24*9) / (7*13)=216/91

Exact quotient: 216 / 91 = (182+34) / 91 = 182 / 91 + 34 / 91 = 2 34/91

Exact quotient: 216/91 = 2  34/91
4 0
3 years ago
It’s in Spanish but please answer thiss
Eddi Din [679]
If you use photo match and just scan the problem it should show u the answer
5 0
3 years ago
Read 2 more answers
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