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3 years ago

Help please! 10 points!

Mathematics

1 answer:

IgorC [24]3 years ago

7 0

Answer:

21.6 or 22

Step-by-step explanation:

Triangles have same angles. This means that they are proportion.

50/27 = 40/x

when you cross multiply to solve x, 50x = 1080

so x = 21.6

If you have to nearest whole number, it will be 22

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Oblicz.Pamiętaj o kolejności wykonywania działań

SashulF [63]

Answer:

33.275

Step-by-step explanation:

1 step: Difference in brackets

$3.5-2\dfrac{1}{3}=3\dfrac{1}{2}-2\dfrac{1}{3}=(3-2)+\left(\dfrac{1}{2}-\dfrac{1}{3}\right)=1+\dfrac{3-2}{3\cdot 2}=1+\dfrac{1}{6}=1\dfrac{1}{6}$

2 step: $0.75\div\dfrac{1}{3}$

$0.75\div\dfrac{1}{3}=\dfrac{75}{100}\div \dfrac{1}{3}=\dfrac{3}{4}\times \dfrac{3}{1}=\dfrac{9}{4}$

3 step: $1.28\div 0.04$

$1.28\div 0.04=128\div 4=32 \ \text{Move point two decimal places}$

4 step:

$2\dfrac{1}{4}\times 1\dfrac{1}{6}=\dfrac{2\cdot 4+1}{4}\times \dfrac{1\cdot 6+1}{6}=\dfrac{9}{4}\times \dfrac{7}{6}=\dfrac{63}{24}=\dfrac{21}{8}$

5 step:

$\dfrac{9}{4}+32-\dfrac{21}{8}+1.65=(32+1.65)+\left(\dfrac{9}{4}-\dfrac{21}{8}\right)=33.65+\dfrac{9\cdot 2-21}{8}=33.65-\dfrac{3}{8}=33.65-0.375=33.275$

6 0

2 years ago

Does anyone have a word problem idea for this equation 1.25x = 0.75x + 50

PSYCHO15rus [73]

Answer: Keke, do you love me? Are your riding?

Idk either.

Tips: make it something about money, and the k should stand for kittens

5 0

3 years ago

What is 1 + 1???????????????????????????????????????????????????

choli [55]

Answer: 2

Have a good day ¯\_(ツ)_/¯

8 0

2 years ago

Read 2 more answers

If the given figure is rotated 180° around the origin, what are the new coordinates of point Z? Z= (6,-9)

Nitella [24]

Answer:

Step-by-step explanation:

Rule for 180 rotation: (x,y) becomes (-x,-y)

So (6,-9) becomes (-6,9)

5 0

2 years ago

Solve the system of equations by the addition method. 5x + 2y = 1 2x - 2y = -8

dolphi86 [110]

Answer:

(-1, 3)

Step-by-step explanation:

5x + 2y = 1

2x - 2y = -8

7x = -7

x= -1

2(-1) - 2y = -8

-2 - 2y = -8

-2y = -6

y = 3

3 0

3 years ago