Write an equation Slope:0 Y-intercept:9

A student is 90 cm tall and growing at a rate of 3 cm per month. At this rate, in how many months will the student grow to a hei

Zolol [24]

Answer:

14 months

Step-by-step explanation:

14x3=42

42+90= 132

6 0

3 years ago

2 1/4 ÷( 3/8 ÷ 1/2 ) help

Triss [41]

Hi there!

~

$2 \frac{1}{4} \div ( \frac{3}{8} \div \frac{1}{2} )$

$= 3$

Hope this helped you!

7 0

4 years ago

Read 2 more answers

Given: ABCD is a trapezoid, m∠1=m∠2, m∠3=m∠4, AB = CD, AC ∩ BD = O Prove: m∠AOD = m∠BCD

LiRa [457]

Since AB = CD the trapezoid is isosceles, which means that ∡A = ∡D

Therefore also ∡2 = ∡3 (they are half of the congruent angles)

For the properties of parallel lines (BD and AD) crossed by a transversal (BD) we have ∡3 = ∡CBD.

Now consider triangles AOD and BCD:
∡OAD (2) = ∡ADO (3) = ∡CBD (3) = ∡CDB (4)

The sum of the angles of a triangle must be 180°, therefore:
∡AOD = 180 - ∡2 - ∡3
∡BCD = 180 - ∡3 - ∡4

∡AOD = ∡BCD because their measure is the difference of congruent angles.

6 0

4 years ago

Write out the first three terms and the last term. Then use the formula for the sum of the first n terms of an arithmetic sequen

Crank

Question:

Write out the first three terms and the last term. Then use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.

30

∑ (−3i+5)

i=1

Answer:

The first three terms are : 2, -1 and -4

The last term is: -85

The sum of the sequence is: -1245

Step-by-step explanation:

Given;

==================================

30

∑ (−3i+5) -------------------(i)