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Anna71 [15]
3 years ago
7

Help please!!

Mathematics
1 answer:
vivado [14]3 years ago
6 0

Answer:

it's the third one 3

Step-by-step explanation:

78, a constant represents the initial temperature

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10 3/9- 10 2/5 Im to lazy to do it please help me out.
coldgirl [10]

Answer:

\boxed{ \ -  \frac{3}{45} }

Step-by-step explanation:

10 3/9 - 10 2/5

we need to convert mixed fractions to improper fractions

10 \frac{3}{9}  =  \frac{10 \times 9 + 3}{9}  =  \frac{93}{9}

10 \frac{2}{5}  =  \frac{10 \times 5 + 2}{5}  =  \frac{52}{5}

Now, we have 93/9 - 52/5

We need to equate the denominators, before subtracting them.

\frac{93}{9}  -  \frac{52}{5}  =  \frac{93 \times 5}{45}  -  \frac{52 \times 9}{45}

\frac{465}{45}  -  \frac{468}{45}

\frac{ - 3}{45}

\boxed{ -  \frac{3}{45} }

The result of 10 3/9- 10 2/5 is - 3/45

8 0
2 years ago
Solve the system of equations.<br><br><br> 2x + 3y = 1<br> y = 3x + 15
MrMuchimi
Since y=3x+15
sub 3x+15 for y in other equation

2x+3(3x+15)=1
2x+9x+45=1
minus 45
11x=-44
divide 11
x=-4

sub
y=3x+15
y=3(-4)+15
y=-12+15
y=3

(-4,3)
6 0
3 years ago
Please help with this one<br><br> -30= -9x - 3=???
Naily [24]

Answer:

x=3

Step-by-step explanation:

6 0
3 years ago
Simplify the expression-9+7<br><br> -2<br><br> 2<br><br> 16<br><br> -16
bogdanovich [222]
- 9 + 7

-2

if you need more details, please leave me a comment
6 0
3 years ago
Read 2 more answers
How many table spoons of vanilla will she use? Plss provide how you got the answer
Ksivusya [100]
Hi!
In one batch she uses 3/4 teaspoon of vanilla
therefore in 5 batch she uses 5*3/4=15/4 teaspoons of vanilla.
as it is given that 3 teaspoons=1 tablespoon
the amount of vanilla used for 5 batches =(15/4)/3=(15/4)*1/3=5/4==1.25 tablespoons.

All the best.
4 0
3 years ago
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