All categories

3 years ago

Please help!! See the attachment, please!

Mathematics

1 answer:

topjm [15]3 years ago

5 0

Answer:

$946$

Step-by-step explanation:

we know that

The formula to find the sum is equal to

$S=(a1+an)n/2$

where

a1 is the first term

an is the last term

n is the number of terms

In this problem we have

$n=11$

$a1=(98-2(1))=96$

$an=(98-2(11))=76$

substitute the values in the formula

$S=(96+76)(11/2)=946$

You might be interested in

What is the height of an isosceles trapezoid, if the lengths of its bases are 5m and 11m, and the length of a leg 4m.

pashok25 [27]

Let EB and CF be two heights. Then quadrilateral EBCF is rectangle, so BC=EF=5 m. It is given that bases are BC=5 m and AD=11 m. Triangles ABE and DCF are congruent, thus,

$AE=FD=\dfrac{AD-EF}{2}=\dfrac{AD-BC}{2}=\dfrac{11-5}{2}=3.$

Consider right triangle ABE, by the Pythagorean theorem

$AB^2=EB^2+AE^2,\\ \\4^2=3^2+EB^2,\\ \\EB^2=16-9=7,\\ \\EB=\sqrt{7}\ m.$

Answer: $\sqrt{7}\ m.$

5 0

2 years ago

PLEASE HELP!! Multiply and Simplify 10x^2/6y^3 * 24y^2/35x^2

Llana [10]

Your answer is: 8x^4 y^5/7.

7 0

3 years ago

Determine the value of x in the diagram.<br> x<br> 2x<br> 2x

ryzh [129]

Answer:

x = 60

Step-by-step explanation:

The sum of exterior angles in a rectangle is equal to 360

so to find the value of x we need to use all given values and write an equation:

x + 2x + x + 2x = 360 add like terms

6x = 360 divide both sides by 6

x = 60

5 0

2 years ago

50 points increased by 26%

QveST [7]

50X0.26=13 than you would add them 50+13 which would equal 63

6 0

3 years ago

Read 2 more answers

X(2x-8) = 0 how do you solve

sleet_krkn [62]

x * 2x = 3x X*-8= -8x

minus 3x on both side

= -11x

-11x = 0

divide -11 on both side

= 0

4 0

2 years ago

Please help!! See the attachment, please!​

Please help!! See the attachment, please!