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3 years ago

Combining like terms with negative coefficients 2y-3xy+4y-5xy ?

Mathematics

1 answer:

Sunny_sXe [5.5K]3 years ago

7 0

Answer:

6y - 8xy

Step-by-step explanation:

2y-3xy+4y-5xy

Combine like terms:

(2y+4y) + (-3xy -5xy)

6y - 8xy

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macy is trying to construct an isosceles triangle. She assigns and angle measurement of 40 degrees to the unique angle of the tr

Hitman42 [59]

Given that Macy wants to construct an isosceles triangle, with the unique angle being 40° it implies that for the triangle to be isosceles, the base angles should be the same. The size of the base angles will be:
(180-40)/2=70
given that that the base is 6 cm, Macy can only form 1 triangle with these dimensions.
The length of the other sides will be found using sine rule
a/sin A=b/sin B
a=6 cm
A=40°
b=?
B=70
hence:
6/sin 40=b/sin 70
b=(6sin 70)/sin40
b=8.77 cm

3 0

3 years ago

PLEASE HELP ME I BEG YOU

Rus_ich [418]

You need to find "two-fifths of 30." Of here means multiplication:

$\begin{aligned}\dfrac{2}{5}\cdot 30 &= \dfrac{2}{5}\cdot\dfrac{30}{1}\\[0.5em] &= \dfrac{60}{5}\\[0.5em] &= 12\end{aligned}$

There are 12 athletes in the club.

5 0

3 years ago

Read 2 more answers

a pie chart is divided into four sectors in fig. 12.42. Each sector represents a percentage of the whole. The two larger sectors

Novosadov [1.4K]

Answer:

Angle formed by the sector measuring x% will be 126°.

Step-by-step explanation:

Since, sum of all sectors formed in a circle is 100%.

By adding the measures of all the sectors,

x + x + 21 + 9 = 100

2x + 30 = 100

2x = 70

x = 35%

Now we know sum of all the central angles formed at the center of a circle = 360°

Therefore, angle formed by x% = 360° × 35%

= $\frac{360\times 35}{100}$

= 126°

8 0

3 years ago

A is an unknown number when you round a to the nearest thousand you get 21,000 when you round a to the nearest hundred you get 2

beks73 [17]

The unknown number a should be 20,500.

4 0

3 years ago

Write √1694 in simplest form. Please help.

belka [17]

√1694 = √121*14 = 11√14

The simplest form of √1694 is 11√14. First, you need to find the highest number which can have a square root, and for 1694, that is 121.

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3 years ago

Read 2 more answers