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3 years ago

7x2–5 - 28-3+5.

Mathematics

2 answers:

malfutka [58]3 years ago

6 0

I can't read, sorry.

Vladimir79 [104]3 years ago

3 0

Answer:

-17

Step-by-step explanation:

PEMDAS

7*2 = 14

14-5 = 9

9-28 = -19

-19-3 = -22

-22 + 5 = -17

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Evaluate 33/5 - 1/10

azamat

Answer:

$\large\boxed{\dfrac{13}{2}=6\dfrac{1}{2}=6.5}$

Step-by-step explanation:

We have the different denominators.

The common denominator is 10.

$\dfrac{33}{5}=\dfrac{33\cdot2}{5\cdot2}=\dfrac{66}{10}$

We can subtract these fractions now.

$\dfrac{33}{5}-\dfrac{1}{10}=\dfrac{66}{10}-\dfrac{1}{10}=\dfrac{66-1}{10}=\dfrac{65:5}{10:5}=\dfrac{13}{2}\\\\\dfrac{13}{2}=\dfrac{12+1}{2}=6\dfrac{1}{2}$

3 0

3 years ago

Read 2 more answers

A right triangle has one angle that measure 23o. The adjacent leg measures 27.6 cm and the hypotenuse measures 30 cm.

MrMuchimi

Answer:

161.8cm²

Step-by-step explanation:

solve for height which is the opposite

opp=x

sin(theata)= opp./hyp.

sin23=x/30

x=30×sin23

x=11.72cm

height=opposite

height=11.72cm

base=adjacent

base=27.6cm

½of 27.6cm=13.8

13.8cm×11.72cm=161.74 (2d.p)

161.74 rounded to the nearest tenths= 161.7

I'm not sure if it's the answer but it's the closest thing to the options

4 0

3 years ago

What is 851.64 in expanded notation?

navik [9.2K]

8 x 100 = 800
5 x 10= 50
1x1= 1
6 x 0.10= 0.6
4 x 0.01 = 0.04
= 851.64

7 0

3 years ago

Does anyone know how to do this

Sati [7]

Answer:

hello

bring the side of the first part of the triangle then you can to bring the (x) of the second traingle

8 0

2 years ago

Candace used 5/8 of her savings to buy a $531.25 laptop. How much did she have in savings before purchasing the laptop?

Serjik [45]

$x-savings\\\\\frac{5}{8}x=531,25\ \ \ \ |\cdot\frac{8}{5}\\x=850\\\\Candance\ had\ \$ 850\ savings.$

3 0

3 years ago